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Fix uv usage within container image #268

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Merged
johnthagen merged 2 commits into from
Apr 10, 2025
+9 −12
Merged

Fix uv usage within container image #268

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df4836e
Fix uv usage within container image
johnthagen Apr 10, 2025
2d5cf69
Remove unneeded ENV
johnthagen Apr 10, 2025
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21 changes: 9 additions & 12 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ FROM python:3.12-slim-bookworm AS python_builder

# Pin uv to a specific version to make container builds reproducible.
ENV UV_VERSION=0.6.12
ENV UV_PYTHON_DOWNLOADS=never

# Set ENV variables that make Python more friendly to running inside a container.
ENV PYTHONDONTWRITEBYTECODE=1
Expand All @@ -37,32 +38,28 @@ RUN pip install "uv==${UV_VERSION}"
# Doing this in a multi-stage build allows omitting compile dependencies from the final image.
# This must be the same path that is used in the final image as the virtual environment has
# absolute symlinks in it.
ENV VIRTUAL_ENV=/opt/venv
RUN python -m venv ${VIRTUAL_ENV}
ENV PATH="${VIRTUAL_ENV}/bin:${PATH}"
ENV UV_PROJECT_ENVIRONMENT=/opt/venv

# Copy in project dependency specification.
COPY pyproject.toml uv.lock ./

# Don't install the package itself with uv because it will install it as an editable install.
# Install only project dependencies, as this is cached until pyproject.toml uv.lock are updated.
RUN uv sync --locked --no-default-groups --no-install-project

# Copy in source files.
# Copy in source files. README is required for the package to build.
COPY README.md ./
COPY src src

# Manually build/install the package.
RUN uv build && \
pip install dist/*.whl
# Install the rest of the application into the virtual environment.
RUN uv sync --locked --no-default-groups --no-editable

## Final Image
# The image used in the final image MUST match exactly to the python_builder image.
FROM python:3.12-slim-bookworm

ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONBUFFERED=1
ENV PIP_NO_CACHE_DIR=1
ENV VIRTUAL_ENV=/opt/venv
ENV UV_PROJECT_ENVIRONMENT=/opt/venv

ENV HOME=/home/user
ENV APP_HOME=${HOME}/app
Expand All @@ -84,8 +81,8 @@ RUN mkdir ${APP_HOME}
WORKDIR ${APP_HOME}

# Copy and activate pre-built virtual environment.
COPY --from=python_builder ${VIRTUAL_ENV} ${VIRTUAL_ENV}
ENV PATH="${VIRTUAL_ENV}/bin:${PATH}"
COPY --from=python_builder ${UV_PROJECT_ENVIRONMENT} ${UV_PROJECT_ENVIRONMENT}
ENV PATH="${UV_PROJECT_ENVIRONMENT}/bin:${PATH}"

# For Python applications that are not installable libraries, you may need to copy in source
# files here in the final image rather than in the python_builder image.
Expand Down