# CI-optimized image for kryz-go-flutter
# Build once on the runner host:
#   docker build -f .devcontainer/ci.Dockerfile -t kryz-ci:latest .devcontainer
# Then all CI jobs use this image — no SDK downloads needed.
#
# First build: ~30 min (downloads Flutter + Android SDK)
# Subsequent builds: ~1 min (Docker layer caching)
# CI runtime without image: ~40 min (redownloads everything per job)
# CI runtime with image: ~2-5 min

FROM --platform=linux/amd64 debian:bookworm-slim

ARG FLUTTER_VERSION=3.44.0

ENV FLUTTER_HOME=/opt/flutter
ENV ANDROID_HOME=/opt/android-sdk
ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
ENV PATH="${FLUTTER_HOME}/bin:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${JAVA_HOME}/bin:${PATH}"

# ── Layer 1: system dependencies ──────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
    wget curl unzip git xz-utils zip python3 libgtk-3-dev ninja-build \
    openjdk-17-jre-headless \
    && rm -rf /var/lib/apt/lists/*

# ── Layer 2: Flutter SDK (tarball, not git clone) ─────────────────
RUN wget -q "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz" \
    -O /tmp/flutter.tar.xz \
    && tar -xf /tmp/flutter.tar.xz -C /opt \
    && rm /tmp/flutter.tar.xz

# ── Layer 3: Android SDK ──────────────────────────────────────────
RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
    && wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/cmdline-tools.zip \
    && unzip -q /tmp/cmdline-tools.zip -d ${ANDROID_HOME}/cmdline-tools \
    && mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest \
    && rm /tmp/cmdline-tools.zip \
    && yes | sdkmanager --licenses \
    && sdkmanager "platform-tools" "platforms;android-35" "build-tools;35.0.0"

# ── Layer 4: Flutter precache (bakes platform artifacts into image) ──
RUN flutter precache --android

# ── Layer 5: non-root user ────────────────────────────────────────
RUN groupadd -g 1000 vscode \
    && useradd -u 1000 -g 1000 -m -s /bin/bash vscode \
    && chown -R vscode:vscode ${ANDROID_HOME} ${FLUTTER_HOME}

USER vscode
WORKDIR /home/vscode/projects