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badal773pawan-59Badal Kumar Prusty
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misc: update sample dockerfiles use non-root user (UID 2002) and base images (#6512)
* updated golang version to 1.23 * updated go sample dockerfile * modified versions to java-21 LTS * modified versions to node v22.14.0 LTS * modified versions to node v22.14.0 LTS * updated base images versions * update Dockerfile for non-root user and update latest stable * update dockerfile and nginx.conf * added dockerfile for react * refactor * refactor * refactor * refactor * resolved all review points * wip --------- Co-authored-by: pawan-59 <pawan@devtron.ai> Co-authored-by: Badal Kumar Prusty <badalkumar@Badals-MacBook-Pro.local>
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‎sample-docker-templates/django/Dockerfile

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# Dockerfile
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# Base Image - slim Python
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FROM python:3.13-slim
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# Base Image
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FROM python:3.8
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# Environment settings
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ENV PYTHONUNBUFFERED=1 LANG=C.UTF-8
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# set default environment variables
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ENV PYTHONUNBUFFERED 1
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ENV LANG C.UTF-8
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# to take runtime arguments and set env variables
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# Django superuser build args
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ARG DJANGO_SUPERUSER_USERNAME
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ENV DJANGO_SUPERUSER_USERNAME=${DJANGO_SUPERUSER_USERNAME}
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ARG DJANGO_SUPERUSER_PASSWORD
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ENV DJANGO_SUPERUSER_PASSWORD=${DJANGO_SUPERUSER_PASSWORD}
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ARG DJANGO_SUPERUSER_EMAIL
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ENV DJANGO_SUPERUSER_USERNAME=${DJANGO_SUPERUSER_USERNAME}
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ENV DJANGO_SUPERUSER_PASSWORD=${DJANGO_SUPERUSER_PASSWORD}
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ENV DJANGO_SUPERUSER_EMAIL=${DJANGO_SUPERUSER_EMAIL}
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# create and set working directory
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RUN mkdir /app
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# Set workdir
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WORKDIR /app
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RUN chown -R www-data:www-data /app
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# Add current directory code to working directory
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COPY . /app/
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# install environment dependencies
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RUN pip install -r requirements.txt
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# install nginx
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RUN apt-get update && apt-get install nginx vim -y --no-install-recommends
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# Install system dependencies and nginx, then install Python deps
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COPY requirements.txt .
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RUN apt-get update && \
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apt-get install -y --no-install-recommends nginx vim && \
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pip install --no-cache-dir -r requirements.txt && \
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rm -rf /var/lib/apt/lists/*
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#Refer https://github.com/devtron-labs/devtron/blob/main/sample-docker-templates/django/nginx.default for sample nginx.default file
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COPY nginx.default /etc/nginx/sites-available/default
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# Copy app code, nginx.conf, and start script
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COPY app/ ./
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COPY nginx.conf /etc/nginx/nginx.conf
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RUN chmod +x start-server.sh
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RUN ln -sf /dev/stdout /var/log/nginx/access.log \
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&& ln -sf /dev/stderr /var/log/nginx/error.log
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# Create non-root user and set permissions
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RUN groupadd -g 2002 nonroot && \
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useradd -u 2002 -g nonroot -s /bin/bash -m nonroot && \
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mkdir -p /tmp/nginx-logs && \
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chown -R nonroot:nonroot /app /tmp/nginx-logs
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# Expose port 8080
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EXPOSE 8080
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# start server
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EXPOSE 8000
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# Switch to non-root
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USER nonroot
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# Stop signal for graceful shutdown
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# https://docs.docker.com/reference/dockerfile/#stopsignal
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STOPSIGNAL SIGTERM
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# Refer https://github.com/devtron-labs/devtron/blob/main/sample-docker-templates/django/start-server.sh for sample start-server.sh file
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# Start server (migrations, superuser, gunicorn, nginx)
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CMD ["/app/start-server.sh"]

‎sample-docker-templates/django/nginx.conf

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worker_processes auto;
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error_log /tmp/nginx-logs/error.log warn;
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pid /tmp/nginx-logs/nginx.pid;
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events {
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worker_connections 1024;
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}
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http {
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include mime.types;
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default_type application/octet-stream;
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access_log /tmp/nginx-logs/access.log;
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client_body_temp_path /tmp/nginx-logs/client_temp;
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proxy_temp_path /tmp/nginx-logs/proxy_temp;
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fastcgi_temp_path /tmp/nginx-logs/fastcgi_temp;
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uwsgi_temp_path /tmp/nginx-logs/uwsgi_temp;
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scgi_temp_path /tmp/nginx-logs/scgi_temp;
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server {
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listen 8080;
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server_name localhost;
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location / {
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proxy_pass http://127.0.0.1:8000;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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}
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location /static/ {
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root /app;
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}
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}
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}

‎sample-docker-templates/django/nginx.default

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‎sample-docker-templates/django/start-server.sh

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#!/usr/bin/env bash
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#
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# Copyright (c) 2024. Devtron Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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#!/bin/sh
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# start-server.sh
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python manage.py migrate
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python manage.py createsuperuser --no-input
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# Apply DB migrations
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python /app/manage.py migrate
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(gunicorn DjangoApp.wsgi --user www-data --bind 0.0.0.0:8000 --workers 3) && nginx -g "daemon off;"
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# create superuser
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python /app/manage.py createsuperuser --no-input
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# Start gunicorn as non-root user binding on port 8000
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gunicorn demo-project.wsgi:application --user nonroot --bind 0.0.0.0:8000 --workers 3 &
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# Start nginx (already configured to run without root)
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nginx -g "daemon off;"

‎sample-docker-templates/flask/Dockerfile

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#Base Image
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FROM python:3.8
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# Base Image - slim Python
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FROM python:3.13-slim
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#Getting System Ready to install dependencies
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RUN apt-get clean \
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&& apt-get -y update
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# Environment settings
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ENV PYTHONUNBUFFERED=1 LANG=C.UTF-8
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#Installing nginx
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RUN apt-get -y install nginx \
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&& apt-get -y install python3-dev \
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&& apt-get -y install build-essential
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#Creating symbolic link for access and error log from nginx
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RUN ln -sf /dev/stdout /var/log/nginx/access.log \
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&& ln -sf /dev/stderr /var/log/nginx/error.log
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# Set workdir
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WORKDIR /app
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#Creating a dir in Container
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RUN mkdir /app
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COPY requirements.txt requirements.txt
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#Moving into the directory created
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WORKDIR /app
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# Install system dependencies and nginx, then install Python deps
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RUN apt-get update && \
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apt-get install -y --no-install-recommends nginx gcc python3-dev musl-dev build-essential libexpat1 && \
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pip install --no-cache-dir -r requirements.txt && \
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apt-get purge -y --auto-remove gcc python3-dev musl-dev build-essential && \
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rm -rf /var/lib/apt/lists/*
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#Changing ownership of files in /app
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RUN chown -R www-data:www-data /app
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# Copy app code, configs, and start script
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COPY nginx.conf /etc/nginx/nginx.conf
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COPY app.py uwsgi.ini start.sh ./
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RUN chmod +x start.sh
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#Adding the complete project in dir created
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ADD . /app/
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# Create non-root user and set permissions
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RUN groupadd -g 2002 nonroot && \
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useradd -u 2002 -g nonroot -s /bin/bash -m nonroot && \
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mkdir -p /tmp/nginx-logs && \
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chown -R nonroot:nonroot /app /tmp/nginx-logs
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#Installing dependencies
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RUN pip3 install -r requirements.txt
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# Expose port 8080
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EXPOSE 8080
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# Refer https://raw.githubusercontent.com/devtron-labs/devtron/main/sample-docker-templates/flask/nginx.default for sample nginx.default file
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COPY nginx.default /etc/nginx/sites-available/default
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# Switch to non-root
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USER nonroot
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#Refer https://raw.githubusercontent.com/devtron-labs/devtron/main/sample-docker-templates/flask/start.sh for sample start.sh file
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#Making start.sh executable
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RUN chmod +x ./start.sh
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# Stop signal for graceful shutdown
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STOPSIGNAL SIGTERM
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CMD ["./start.sh"]
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# Start server (migrations, superuser, gunicorn, nginx)
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CMD ["/app/start.sh"]

‎sample-docker-templates/flask/nginx.conf

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worker_processes auto;
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error_log /tmp/nginx-logs/error.log warn;
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pid /tmp/nginx-logs/nginx.pid;
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events {}
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http {
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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access_log /tmp/nginx-logs/access.log;
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client_body_temp_path /tmp/nginx-logs/client_temp;
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proxy_temp_path /tmp/nginx-logs/proxy_temp;
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fastcgi_temp_path /tmp/nginx-logs/fastcgi_temp;
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uwsgi_temp_path /tmp/nginx-logs/uwsgi_temp;
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scgi_temp_path /tmp/nginx-logs/scgi_temp;
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server {
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listen 8080;
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server_name localhost;
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location / {
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proxy_pass http://127.0.0.1:5000;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $scheme;
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}
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location /static/ {
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alias /app/static/;
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}
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}
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}

‎sample-docker-templates/flask/nginx.default

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‎sample-docker-templates/flask/start.sh

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#!/usr/bin/env bash
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#
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# Copyright (c) 2024. Devtron Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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service nginx start
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# Refer https://raw.githubusercontent.com/devtron-labs/devtron/main/sample-docker-templates/flask/uwsgi.ini for sample uwsgi.ini file
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uwsgi --ini uwsgi.ini
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#!/bin/sh
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# Start uWSGI in the background
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uwsgi --ini /app/uwsgi.ini &
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# Start Nginx in the foreground
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nginx -g "daemon off;"

‎sample-docker-templates/flask/uwsgi.ini

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[uwsgi]
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module = app:app
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uid = www-data
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gid = www-data
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master = true
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processes = 5
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socket = /tmp/uwsgi.socket
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chmod-sock = 664
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vacuum = true
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die-on-term = true
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http = 127.0.0.1:5000
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uid = nonroot
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gid = nonroot
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vacuum = true
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die-on-term = true

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