Dockerfile.apk

FROM bull-mobile

# Build configuration arguments
# MODE: flutter build mode: debug or release
ARG MODE=debug
# FORMAT: output format: apk or aab
ARG FORMAT=apk
# GRADLE_HEAP: JVM heap size for Gradle (e.g. 2g, 4g, 6g)
ARG GRADLE_HEAP=4g
COPY --chown=$USER:$USER . /app/

WORKDIR /app

# Install Flutter version specified in .fvmrc (no-op if it matches base image)
RUN fvm install

# Setup the project
RUN fvm flutter pub get
RUN fvm dart run build_runner build --delete-conflicting-outputs
RUN fvm flutter gen-l10n


# Configure Gradle for containerized builds
RUN mkdir -p $HOME/.gradle && \
    echo "org.gradle.daemon=false" > $HOME/.gradle/gradle.properties && \
    echo "org.gradle.jvmargs=-Xmx${GRADLE_HEAP} -XX:+HeapDumpOnOutOfMemoryError" >> $HOME/.gradle/gradle.properties

# Build the app
# SOURCE_DATE_EPOCH: makes OpenSSL use a deterministic build timestamp instead of wall-clock time
# CARGO_ENCODED_RUSTFLAGS: remaps absolute paths so they don't differ between machines
RUN SOURCE_DATE_EPOCH=$(git -C /app log -1 --format=%ct) && \
    CARGO_ENCODED_RUSTFLAGS=$(printf '%s\037%s\037%s' \
        "--remap-path-prefix=$HOME/.cargo=/cargo" \
        "--remap-path-prefix=$HOME/.rustup=/rustup" \
        "--remap-path-prefix=/app=/build") && \
    CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 && \
    export SOURCE_DATE_EPOCH CARGO_ENCODED_RUSTFLAGS CARGO_PROFILE_RELEASE_CODEGEN_UNITS && \
    if [ "$FORMAT" = "aab" ]; then \
        fvm flutter build appbundle --${MODE}; \
    else \
        fvm flutter build apk --${MODE}; \
    fi