feat: dockerfile uses ape slim and add build yaml

.github/workflows/build.yaml

@@ -0,0 +1,117 @@
+name: Container Images
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  release:
+    type: [published]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+            type=ref,event=tag
+            type=raw,value=stable,enable=${{ startsWith(github.ref, 'refs/tags/') }}
+            type=ref,event=pr
+
+      - name: Show tags
+        run: |
+          echo "Tags generated by metadata-action:\n"
+          for tag in ${{ steps.metadata.output.tags }}; do
+            echo $tag
+          done
+
+      - name: Extract version from tag
+        if: startsWith(github.ref, 'refs/tags/')
+        run: echo "VERSION=${GITHUB_REF##*/}" >> $GITHUB_ENV
+
+      - name: Log into GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            BASE_APE_IMAGE_TAG=latest-slim
+
+      - name: Fetch all tags and store them
+        run: |
+          # List all tags
+          tags=$(git tag -l)
+          echo "All tags:"
+          echo "$tags"
+
+          # Save tags in an environment variable for later use
+          echo "ALL_TAGS=$(echo $tags | tr '\n' ' ')" >> $GITHUB_ENV
+
+      - name: Retain last two minor versions
+        run: |
+          # Fetch all tags in the format X.Y.Z
+          echo "Using stored tags..."
+          all_tags="${{ env.ALL_TAGS }}"
+          echo "All tags:"
+          echo "$all_tags"
+
+          # Extract the minor versions (X.Y) from tags in the format vX.X.X
+          latest_two_minors=$(echo "$all_tags" | tr ' ' '\n' | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sed -E 's/^v([0-9]+\.[0-9]+)\.[0-9]+$/\1/' | uniq | tail -n 2)
+          echo "Last two minor versions:"
+          echo "$latest_two_minors"
+
+          keep_tags=""
+          for minor in $latest_two_minors; do
+            echo "Processing minor version: $minor"
+            patches=$(echo "$all_tags" | tr ' ' '\n' | grep "^v$minor\.")
+            echo "Latest patch for $minor: $patches"
+            keep_tags="$keep_tags $patches"
+          done
+
+          # Store the tags in the environment variable
+          keep_tags=$(echo $keep_tags | tr ' ' '\n' | paste -sd ',' -)
+          echo "Tags to keep: $keep_tags"
+          echo "keep_tags=$keep_tags" >> $GITHUB_ENV
+          echo "keep_tags=$keep_tags"
+
+      - name: Run container retention policy
+        if: github.ref == 'refs/heads/main'
+        uses: snok/container-retention-policy@v3.0.0
+        with:
+          account: ApeWorX
+          token: ${{ secrets.GITHUB_TOKEN }}
+          image-tags: "!stable* !latest* !${{ env.keep_tags }}"
+          tag-selection: both
+          cut-off: 4w
+          dry-run: true
+

Dockerfile

@@ -3,6 +3,7 @@
 #---------------------------------------------------------------------------------------------
 
 # Build with builder image to reduce image size
+ARG BASE_APE_IMAGE_TAG
 FROM python:3.11 as builder
 USER root
 WORKDIR /wheels
@@ -13,7 +14,7 @@ RUN pip install --upgrade pip && pip install wheel
 RUN pip wheel . --wheel-dir=/wheels
 
 # Install from wheels
-FROM apeworx/ape:stable
+FROM ghcr.io/apeworx/ape:${BASE_APE_IMAGE_TAG:-latest-slim}
 USER root
 COPY --from=builder /wheels /wheels
 RUN pip install --upgrade pip \