How to run inside docker and how to start

Dockerfile

@@ -0,0 +1,14 @@
+ARG PYTHON_VERSION
+FROM python:${PYTHON_VERSION}-slim-bookworm
+
+ADD requirements.txt /
+
+RUN pip install --no-cache-dir -r /requirements.txt
+
+WORKDIR /src
+
+ADD src/ .
+
+USER nobody
+
+ENTRYPOINT ["python", "entrypoint.py"]

README.md

@@ -1,8 +1,69 @@
-### websockets-notifications demo
+### websockets-notifications Demo
 
-#### How to set JWK public key to validate jwt tokens
-One of the options:
-1. By setting the key as an environment variable named `JWT_PUBLIC_KEY`.
-2. By placing the key in a file named `jwt_public_key.pem` inside the `secrets` folder in repo root.
+This project requires Python 3.12+.
+Dependencies are managed by [uv](https://github.com/astral-sh/uv) and should be installed.
+The list of requirements is stored in `pyproject.toml`.
 
-If both options are set, the application will not start.
+### Some Facts About Environment Variables:
+1. When running in a container, do not forget to set `WEBSOCKETS_HOST` in the environment variables. In most cases, it should be `0.0.0.0`.
+2. The app requires a JWT public key for authentication. It can be set using one of two options (if both are set, the app will not start):
+    1. Environment variable `JWT_PUBLIC_KEY`. Ensure it has no newlines. Check `env.example` for the correct format.
+    2. A file named `jwt_public_key.pem` inside the `src` directory.
+
+### Develop on a Local Machine
+Install and activate a virtual environment:
+```bash
+uv venv
+source venv/bin/activate
+```
+
+Set environment variables
+```bash
+cp env.example ./src/.env  # default environment variables
+```
+
+Install requirements:
+```bash
+make  # compile and install deps
+```
+
+Run message broker:
+```bash
+docker compose up -d
+```
+
+Run server:
+```bash
+cd python src/entrypoint.py
+```
+
+Connect to the server in cli:
+```bash
+python -m websockets ws://localhost:{% port %}/{% websockets_path % }
+```
+
+Format code with ruff
+```bash
+make fmt
+```
+
+Run linters
+```bash
+make lint
+```
+
+Run tests
+```bash
+make test
+```
+
+## Build docker image
+If you need to set python version manually
+```bash
+docker build --build-arg "PYTHON_VERSION=3.11.6" --tag websocket-notifications .
+```
+
+Preferred way is to use `.python-version` file
+```bash
+docker build --build-arg "PYTHON_VERSION=$(cat .python-version)" --tag websocket-notifications .
+```

src/app/conf/settings.py

@@ -26,7 +26,7 @@ class Settings(BaseSettings):
         env_file=".env",
         env_file_encoding="utf-8",
         case_sensitive=True,
-        secrets_dir="../secrets",
+        secrets_dir=".",
     )