perf: Lower container size

Author: clemlesne

cicd/Dockerfile

@@ -1,27 +1,33 @@
-# Base container
-FROM ghcr.io/astral-sh/uv:python3.12-bookworm AS base
+# Builder container (with UV as package manager)
+FROM ghcr.io/astral-sh/uv:python3.12-bookworm-slim@sha256:aacf61c53ed988e4a32b8b4da19043fdce7a8efcc67fb21ebc4cc0ba85f335b3 AS builder
+
+ENV UV_COMPILE_BYTECODE=1
+ENV UV_LINK_MODE=copy
 
 RUN rm -f /etc/apt/apt.conf.d/docker-clean \
   && echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
 RUN --mount=target=/var/lib/apt/lists,type=cache,id=apt-lists-${TARGETPLATFORM},sharing=locked \
     apt-get update -q \
     && apt-get install -y -q --no-install-recommends \
-        ffmpeg
+        build-essential
 
-ARG VERSION
-ENV VERSION=${VERSION}
+WORKDIR /app
+
+COPY . .
 
-RUN useradd -m appuser
+RUN --mount=target=/root/.cache/uv,type=cache,id=uv-${TARGETPLATFORM},sharing=locked \
+    uv sync --frozen --no-dev
 
-COPY --chown=appuser:appuser . /app
+# Output container (with only venv and app source)
+FROM python:3.12-slim-bookworm@sha256:10f3aaab98db50cba827d3b33a91f39dc9ec2d02ca9b85cbc5008220d07b17f3
 
 WORKDIR /app
 
-RUN --mount=target=/root/.cache/uv,type=cache,id=uv-${TARGETPLATFORM},sharing=locked \
-    uv sync --frozen
+ENV PATH=/app/.venv/bin:$PATH
 
-USER appuser
+COPY --from=builder --chown=app:app /app .
 
-ENV PATH=/app/.venv/bin:$PATH
+ARG VERSION
+ENV VERSION=${VERSION}
 
 CMD ["bash", "-c", "gunicorn app.main:api --bind 0.0.0.0:8080 --graceful-timeout 60 --proxy-protocol --timeout 60 --worker-class uvicorn.workers.UvicornWorker --workers 4"]