Use uv

Dockerfile

@@ -1,23 +1,21 @@
-# For more information, please refer to https://aka.ms/vscode-docker-python
-FROM python:3
+FROM python:3 AS build
 
-# Keeps Python from generating .pyc files in the container
-ENV PYTHONDONTWRITEBYTECODE=1
-
-# Turns off buffering for easier container logging
-ENV PYTHONUNBUFFERED=1
-
-# Install pip requirements
-COPY requirements.txt .
-RUN python -m pip install -r requirements.txt
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
 
 WORKDIR /app
-COPY . /app
+RUN uv venv
+
+COPY requirements.txt .
+RUN uv pip install --system -r requirements.txt
+
+# Copy the project into the intermediate image
+ADD . /app
+
+FROM python:3-slim
+# Copy the environment, but not the source code
+COPY --from=build --chown=app:app /app/.venv /app/.venv
 
-# Creates a non-root user with an explicit UID and adds permission to access the /app folder
-# For more info, please refer to https://aka.ms/vscode-docker-python-configure-containers
 RUN adduser -u 5678 --disabled-password --gecos "" appuser && chown -R appuser /app
 USER appuser
 
-# During debugging, this entry point will be overridden. For more information, please refer to https://aka.ms/vscode-docker-python-debug
 CMD ["python", "scl.py"]