ci stuff

Signed-off-by: Anton Afanasyeu <a.afanasieff@gmail.com>

Dockerfile

@@ -0,0 +1,67 @@
+# Minimal Android Cast CI image (glibc-based; NDK prebuilts require linux-x86_64 glibc).
+#
+# Build:
+#   docker build -t androidcast-ci:latest -f Dockerfile .
+#
+# Run CI build (mount repo):
+#   docker run --rm -v "$(pwd)":/workspace -w /workspace androidcast-ci:latest
+#
+# Interactive:
+#   docker run --rm -it -v "$(pwd)":/workspace -w /workspace androidcast-ci:latest bash
+#
+# Note: Alpine/musl breaks NDK clang prebuilts; use Debian slim instead of rust:* for size.
+
+FROM debian:bookworm-slim
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG ANDROID_SDK_ROOT=/opt/android-sdk
+ARG ANDROID_NDK_VERSION=27.0.12077973
+ARG ANDROID_CMAKE_VERSION=3.22.1
+ARG CMDLINE_TOOLS_REV=11076708
+
+ENV ANDROID_SDK_ROOT="${ANDROID_SDK_ROOT}" \
+    ANDROID_HOME="${ANDROID_SDK_ROOT}" \
+    ANDROID_NDK_HOME="${ANDROID_SDK_ROOT}/ndk/${ANDROID_NDK_VERSION}" \
+    ANDROID_NDK_ROOT="${ANDROID_SDK_ROOT}/ndk/${ANDROID_NDK_VERSION}" \
+    PATH="${ANDROID_SDK_ROOT}/cmdline-tools/latest/bin:${PATH}" \
+    ANDROIDCAST_CCACHE=1 \
+    ANDROIDCAST_USE_DISTCC=0 \
+    GRADLE_USER_HOME=/root/.gradle \
+    JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        bash ca-certificates curl git openjdk-21-jdk-headless unzip wget \
+        ninja-build cmake ccache \
+    && rm -rf /var/lib/apt/lists/*
+
+# Optional distributed compile (off unless ANDROIDCAST_USE_DISTCC=1 + DISTCC_HOSTS at run time).
+RUN apt-get update && apt-get install -y --no-install-recommends distcc \
+    && rm -rf /var/lib/apt/lists/* || true
+
+RUN mkdir -p "${ANDROID_SDK_ROOT}/cmdline-tools" \
+    && curl -fsSL "https://dl.google.com/android/repository/commandlinetools-linux-${CMDLINE_TOOLS_REV}_latest.zip" \
+        -o /tmp/cmdline-tools.zip \
+    && unzip -q /tmp/cmdline-tools.zip -d "${ANDROID_SDK_ROOT}/cmdline-tools" \
+    && mv "${ANDROID_SDK_ROOT}/cmdline-tools/cmdline-tools" "${ANDROID_SDK_ROOT}/cmdline-tools/latest" \
+    && rm -f /tmp/cmdline-tools.zip
+
+RUN yes | sdkmanager --licenses >/dev/null \
+    && sdkmanager \
+        "platform-tools" \
+        "platforms;android-34" \
+        "build-tools;34.0.0" \
+        "ndk;${ANDROID_NDK_VERSION}" \
+        "cmake;${ANDROID_CMAKE_VERSION}"
+
+WORKDIR /workspace
+
+# Pre-create ccache dir (volume can override at runtime).
+RUN mkdir -p /workspace/build/.ccache || true
+
+COPY scripts/ci-build.sh scripts/android-ndk.sh scripts/native-build-cache.sh scripts/build-native-codecs.sh \
+    /workspace/scripts/
+
+RUN chmod +x /workspace/scripts/ci-build.sh /workspace/scripts/build-native-codecs.sh
+
+# Full tree is bind-mounted in CI; default command runs the pipeline.
+CMD ["./scripts/ci-build.sh"]