Added entrypoint, changed Dockerfile to multi-target variant

README.md

@@ -56,3 +56,29 @@ uv run celery -A comment_automation.celery_app:celery_app worker --loglevel=info
 Without uv (venv already created):
 
 ./.venv/bin/celery -A comment_automation.celery_app:celery_app worker --loglevel=info
+
+## Docker targets and entrypoint modes
+
+The container uses entrypoint.sh and supports two main modes:
+
+- http: starts the FastAPI app.
+- celery: starts the Celery worker.
+
+Build local/test target (installs all dependency groups):
+
+docker build --target local_test -t comment-automation:local .
+
+Build production target (installs only non-dev dependencies):
+
+docker build --target production -t comment-automation:prod .
+
+Run HTTP app (default mode):
+
+docker run --rm -p 8000:8000 comment-automation:prod
+
+Run Celery worker mode:
+
+docker run --rm \
+   -e CELERY_BROKER_URL=redis://host.docker.internal:6379/0 \
+   -e CELERY_RESULT_BACKEND=redis://host.docker.internal:6379/0 \
+   comment-automation:prod celery