Every job now runs inside kryz-ci:latest via 'docker run' with volume
mounts. The image is built once per pipeline (with a cache check) instead
of every job redownloading Flutter + Android SDK + Java independently.
Before: ~40 min (each of 3-4 jobs downloads ~750MB of SDKs from scratch)
After (first run): ~25 min (single Docker build, then all jobs use cached image)
After (cached): ~5-8 min (image already on runner, jobs just docker run)
Changes:
- ci.yml: replace inline SDK setup in lint/test/build-android with
'docker run --rm -v ${PWD}:/workspace kryz-ci:latest' per step
- release.yml: same container strategy + fix auth token leak (was
hardcoded '***' instead of using $GITEA_TOKEN env var)
- ci.Dockerfile: add cleanup (rm /tmp, http cache) to shrink image size
- Net reduction: 3 files changed, -111 lines removed
60 lines
2.9 KiB
Docker
60 lines
2.9 KiB
Docker
# CI-optimized image for kryz-go-flutter
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# Build once on the runner host:
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# docker build -f .devcontainer/ci.Dockerfile -t kryz-ci:latest .devcontainer
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# Then all CI jobs use this image — no SDK downloads needed.
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#
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# First build: ~30 min (downloads Flutter + Android SDK)
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# Subsequent builds: ~1 min (Docker layer caching)
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# CI runtime without image: ~40 min (redownloads everything per job)
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# CI runtime with image: ~2-5 min
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FROM --platform=linux/amd64 debian:bookworm-slim
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ARG FLUTTER_VERSION=3.44.0
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ENV FLUTTER_HOME=/opt/flutter
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ENV ANDROID_HOME=/opt/android-sdk
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ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
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ENV PATH="${FLUTTER_HOME}/bin:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${JAVA_HOME}/bin:${PATH}"
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# ── Layer 1: system dependencies ──────────────────────────────────
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# Stable layer — only rebuilds when package list changes
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RUN apt-get update && apt-get install -y --no-install-recommends \
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wget curl unzip git xz-utils zip python3 libgtk-3-dev ninja-build \
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openjdk-17-jre-headless \
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&& rm -rf /var/lib/apt/lists/* \
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&& rm -rf /tmp/* /var/tmp/*
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# ── Layer 2: Flutter SDK (tarball, not git clone) ─────────────────
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# Tarball is deterministic — layer stays cached until FLUTTER_VERSION changes
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RUN wget -q "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz" \
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-O /tmp/flutter.tar.xz \
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&& tar -xf /tmp/flutter.tar.xz -C /opt \
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&& rm /tmp/flutter.tar.xz \
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&& chmod -R a+r ${FLUTTER_HOME}
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# ── Layer 3: Android SDK ──────────────────────────────────────────
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# Only rebuilds when cmdline-tools version changes
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RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
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&& wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/cmdline-tools.zip \
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&& unzip -q /tmp/cmdline-tools.zip -d ${ANDROID_HOME}/cmdline-tools \
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&& mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest \
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&& rm /tmp/cmdline-tools.zip \
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&& yes | sdkmanager --licenses \
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&& sdkmanager "platform-tools" "platforms;android-35" "build-tools;35.0.0" \
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&& chmod -R a+r ${ANDROID_HOME}
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# ── Layer 4: Flutter precache (bakes platform artifacts into image) ──
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# Runs once — cached in the image layer
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RUN flutter precache --android \
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&& rm -rf ~/.cache/flutter/*/http_* \
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&& rm -rf /tmp/*
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# ── Layer 5: non-root user ────────────────────────────────────────
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RUN groupadd -g 1000 vscode \
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&& useradd -u 1000 -g 1000 -m -s /bin/bash vscode \
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&& chown -R vscode:vscode ${ANDROID_HOME} ${FLUTTER_HOME} /home/vscode
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USER vscode
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WORKDIR /home/vscode/projects
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