feat: serve app with gunicorn

Dockerfile

@@ -18,7 +18,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 # The .dockerignore file ensures we only include what's specified
 COPY musicround/ ./musicround/
 COPY migrations/ ./migrations/
-COPY run_migration.py run.py docker-entrypoint.sh LICENSE favicon.ico .
+COPY run_migration.py run.py wsgi.py docker-entrypoint.sh LICENSE favicon.ico .
 
 # Make the entrypoint script executable
 RUN chmod +x docker-entrypoint.sh

docker-entrypoint.sh

@@ -23,7 +23,18 @@ case "${FLASK_DEBUG,,}" in
     exec python -m flask run --host=0.0.0.0 --port=5000 --reload --debug
     ;;
   *)
-    echo "Starting Flask application server..."
+    : "${GUNICORN_BIND:=0.0.0.0:5000}"
-    exec python run.py
+    : "${GUNICORN_WORKERS:=2}"
+    : "${GUNICORN_THREADS:=4}"
+    : "${GUNICORN_TIMEOUT:=120}"
+    echo "Starting Gunicorn application server..."
+    exec gunicorn \
+      --bind "$GUNICORN_BIND" \
+      --workers "$GUNICORN_WORKERS" \
+      --threads "$GUNICORN_THREADS" \
+      --timeout "$GUNICORN_TIMEOUT" \
+      --access-logfile - \
+      --error-logfile - \
+      wsgi:app
     ;;
 esac

requirements.txt

@@ -17,6 +17,7 @@ Flask-Mail
 Flask-Session
 authlib>=1.6.5
 Flask-Caching
+gunicorn
 psutil
 
 # Testing dependencies

wsgi.py

@@ -0,0 +1,3 @@
+from musicround import create_app
+
+app = create_app()