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Mathias Beaulieu-Duncan a92326374d Replace CLI examples with multi-stage Dockerfile examples - Web: Build app and serve with nginx - Android: Extract APK from multi-stage build - Linux: Build desktop app with minimal runtime - Consolidated CI/CD section Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>		2026-02-03 03:53:29 -05:00
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.gitignore	Initial minimal Flutter SDK image for web/WASM CI builds	2026-02-02 00:39:04 -05:00
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Dockerfile.android	Upgrade commons-lang3 to fix CVE-2025-48924	2026-02-03 02:45:13 -05:00
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README.md	Replace CLI examples with multi-stage Dockerfile examples	2026-02-03 03:53:29 -05:00

README.md

Flutter SDK Docker Images

Lightweight Flutter SDK images for CI/CD pipelines. Built on Wolfi, a security-focused Linux distribution designed for containers.

Images

Variant	Use Case	Size	Arch
	Web/WASM builds
	Android APK/AAB builds
	Linux desktop builds

Why Wolfi?

Wolfi is a lightweight Linux distribution built specifically for containers. It provides:

Minimal footprint - Only essential packages, nothing extra
Daily security updates - Patches applied quickly
Designed for containers - No legacy cruft from traditional distros

Features

Lightweight - Optimized for fast CI/CD pulls
Secure - Built on Wolfi with continuous vulnerability scanning
Multi-arch - Supports both linux/amd64 and linux/arm64
Non-root - Runs as unprivileged user (UID 65532)
Supply chain security - SBOM and SLSA provenance attestations included

Dockerfile Examples

Web App

FROM svrnty/flutter-sdk:web-latest AS build
COPY . /app
WORKDIR /app
RUN flutter pub get && flutter build web --release

FROM nginx:alpine
COPY --from=build /app/build/web /usr/share/nginx/html
EXPOSE 80

Android APK

FROM svrnty/flutter-sdk:android-latest AS build
COPY . /app
WORKDIR /app
RUN flutter pub get && flutter build apk --release

FROM scratch
COPY --from=build /app/build/app/outputs/flutter-apk/app-release.apk /

Linux Desktop

FROM svrnty/flutter-sdk:linux-latest AS build
COPY . /app
WORKDIR /app
RUN flutter pub get && flutter build linux --release

FROM ubuntu:22.04
RUN apt-get update && apt-get install -y libgtk-3-0 && rm -rf /var/lib/apt/lists/*
COPY --from=build /app/build/linux/x64/release/bundle /app
ENTRYPOINT ["/app/my_app"]

CI/CD

# GitHub Actions / Gitea Actions
jobs:
  build:
    runs-on: ubuntu-latest
    container:
      image: svrnty/flutter-sdk:android-latest
    steps:
      - uses: actions/checkout@v4
      - run: flutter pub get
      - run: flutter build apk --release

# GitLab CI
build:
  image: svrnty/flutter-sdk:android-latest
  script:
    - flutter pub get
    - flutter build apk --release

Automatic Updates

Images are automatically rebuilt when:

New Flutter stable versions are released
Base image security updates are available

Every build is scanned and includes supply chain attestations (SBOM, SLSA provenance).

License

MIT