chore: Use uv to install python packages in containers in Docker Compose setup

Author: natkam

examples/docker_compose/Dockerfile-DBInit

@@ -1,20 +1,24 @@
 FROM postgres
 
-# Install git
+# Install python
 RUN apt-get update && \
-    apt-get install -y python3 python3-venv && \
+    apt-get install -y python3 && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+# Install uv
+COPY --from=ghcr.io/astral-sh/uv:0.9.3 /uv /uvx /bin/
+
 WORKDIR /app
 
-# Copy necessary files and folders
+# Install python dependencies, only copying necessary files
 COPY ./pyproject.toml MANIFEST.in ./
-COPY ./grader_service ./grader_service
-# Create a virtual environment
-RUN python3 -m venv /venv
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv sync --no-dev
 
-# Activate venv and install the package
-RUN /venv/bin/pip install .
+# Copy the project files and install the package itself
+COPY ./grader_service ./grader_service
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv pip install .
 
 CMD ["sh", "-c", "/app/init-db-postgres.sh"]

examples/docker_compose/Dockerfile-Hub

@@ -10,8 +10,7 @@ WORKDIR /app
 
 ENV JUPYTERHUB_CRYPT_KEY=e3f92a0d5e37446c7e894a2ef6c6ec3bcb4aa3c38d2a442eb567adf780597aa0
 
-RUN pip install grader_labextension
-
+RUN python3 -m pip install grader_labextension
 RUN python3 -m pip install dockerspawner oauthenticator
 
 CMD ["jupyterhub", "-f", "/app/jupyterhub_config.py"]

examples/docker_compose/Dockerfile-Service

@@ -1,19 +1,28 @@
 FROM python:3.13-slim
 
-# Install git
+# Install git and sqlite
 RUN apt-get update && \
     apt-get install -y git sqlite3 && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+# Install uv
+COPY --from=ghcr.io/astral-sh/uv:0.9.3 /uv /uvx /bin/
+ENV UV_SYSTEM_PYTHON=true
+
 WORKDIR /app
 
-# Copy necessary files and folders
+# Install python dependencies, only copying necessary files
 COPY ./pyproject.toml MANIFEST.in ./
-COPY ./grader_service ./grader_service
+RUN uv pip compile pyproject.toml -o requirements.txt
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv pip install -r requirements.txt && \
+    uv pip install numpy ipykernel
 
-RUN pip install .
-RUN pip install numpy ipykernel
+# Copy the project files and install the package itself
+COPY ./grader_service ./grader_service
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv pip install .
 
 # Set default branch to main and default user
 RUN git config --global init.defaultBranch main && \