Switch startup script bash to exec for clean sigterm handling & better process management.

Author: vladd-bit

start_service_debug.sh

@@ -52,13 +52,15 @@ else
   exit 1
 fi
 
-$python_version -m gunicorn wsgi:app --worker-class "$OCR_SERVICE_WORKER_CLASS" \
-                                     --bind "$OCR_SERVICE_HOST:$OCR_SERVICE_PORT" \
-                                     --threads "1" \
-                                     --workers "$OCR_WEB_SERVICE_WORKERS" \
-                                     --access-logfile "$OCR_SERVICE_GUNICORN_LOG_FILE_PATH" \
-                                     --reload --log-level "debug" \
-                                     --max-requests "$OCR_SERVICE_GUNICORN_MAX_REQUESTS" \
-                                     --max-requests-jitter "$OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER" \
-                                     --timeout "$OCR_SERVICE_GUNICORN_TIMEOUT" \
-                                     --graceful-timeout "$OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"
+gunicorn_cmd=("$python_version" "-m" "gunicorn")
+
+exec "${gunicorn_cmd[@]}" wsgi:app --worker-class "$OCR_SERVICE_WORKER_CLASS" \
+                                   --bind "$OCR_SERVICE_HOST:$OCR_SERVICE_PORT" \
+                                   --threads "1" \
+                                   --workers "$OCR_WEB_SERVICE_WORKERS" \
+                                   --access-logfile "$OCR_SERVICE_GUNICORN_LOG_FILE_PATH" \
+                                   --reload --log-level "debug" \
+                                   --max-requests "$OCR_SERVICE_GUNICORN_MAX_REQUESTS" \
+                                   --max-requests-jitter "$OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER" \
+                                   --timeout "$OCR_SERVICE_GUNICORN_TIMEOUT" \
+                                   --graceful-timeout "$OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"

start_service_production.sh

@@ -36,7 +36,7 @@ if [[ -x "$VIRTUAL_ENV/bin/gunicorn" ]]; then
   export VIRTUAL_ENV
   export PATH="$VIRTUAL_ENV/bin:$PATH"
   python_cmd="$VIRTUAL_ENV/bin/python"
-  gunicorn_cmd="$VIRTUAL_ENV/bin/gunicorn"
+  gunicorn_cmd=("$VIRTUAL_ENV/bin/gunicorn")
 else
   # Fallback to system python if venv missing
   python_cmd=python3
@@ -47,16 +47,16 @@ else
   elif command -v python3.13 &>/dev/null; then
     python_cmd=python3.13
   fi
-  gunicorn_cmd="$python_cmd -m gunicorn"
+  gunicorn_cmd=("$python_cmd" "-m" "gunicorn")
 fi
 
-$gunicorn_cmd wsgi:app --worker-class "$OCR_SERVICE_WORKER_CLASS" \
-                       --bind "$OCR_SERVICE_HOST:$OCR_SERVICE_PORT" \
-                       --threads "1" \
-                       --workers "$OCR_WEB_SERVICE_WORKERS" \
-                       --access-logfile "$OCR_SERVICE_GUNICORN_LOG_FILE_PATH" \
-                       --log-level "$OCR_SERVICE_GUNICORN_LOG_LEVEL" \
-                       --max-requests "$OCR_SERVICE_GUNICORN_MAX_REQUESTS" \
-                       --max-requests-jitter "$OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER" \
-                       --timeout "$OCR_SERVICE_GUNICORN_TIMEOUT" \
-                       --graceful-timeout "$OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"
+exec "${gunicorn_cmd[@]}" wsgi:app --worker-class "$OCR_SERVICE_WORKER_CLASS" \
+                                   --bind "$OCR_SERVICE_HOST:$OCR_SERVICE_PORT" \
+                                   --threads "1" \
+                                   --workers "$OCR_WEB_SERVICE_WORKERS" \
+                                   --access-logfile "$OCR_SERVICE_GUNICORN_LOG_FILE_PATH" \
+                                   --log-level "$OCR_SERVICE_GUNICORN_LOG_LEVEL" \
+                                   --max-requests "$OCR_SERVICE_GUNICORN_MAX_REQUESTS" \
+                                   --max-requests-jitter "$OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER" \
+                                   --timeout "$OCR_SERVICE_GUNICORN_TIMEOUT" \
+                                   --graceful-timeout "$OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"