Dockerfile

FROM gradle:6.0.1-jdk8

ENV ANDROID_SDK_URL https://dl.google.com/android/repository/sdk-tools-linux-3859397.zip
ENV ANDROID_API_LEVEL android-29
ENV ANDROID_BUILD_TOOLS_VERSION 29.0.3
ENV ANDROID_HOME /usr/local/android-sdk-linux
ENV ANDROID_NDK_VERSION 20.0.5594570
ENV ANDROID_VERSION 29
ENV ANDROID_NDK_HOME ${ANDROID_HOME}/ndk/${ANDROID_NDK_VERSION}/
ENV PATH ${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools

RUN mkdir "$ANDROID_HOME" .android && \
    cd "$ANDROID_HOME" && \
    curl -o sdk.zip $ANDROID_SDK_URL && \
    unzip sdk.zip && \
    rm sdk.zip

RUN yes | ${ANDROID_HOME}/tools/bin/sdkmanager --licenses
RUN $ANDROID_HOME/tools/bin/sdkmanager --update
RUN $ANDROID_HOME/tools/bin/sdkmanager "build-tools;${ANDROID_BUILD_TOOLS_VERSION}" \
    "platforms;android-${ANDROID_VERSION}" \
    "platform-tools" \
    "ndk;$ANDROID_NDK_VERSION"
ENV PATH ${ANDROID_NDK_HOME}:$PATH
ENV PATH ${ANDROID_NDK_HOME}/prebuilt/linux-x86_64/bin/:$PATH

CMD mkdir -p /home/source/TMessagesProj/build/outputs/apk && cp -R /home/source/. /home/gradle && cd /home/gradle && gradle assembleRelease && cp -R /home/gradle/TMessagesProj/build/outputs/apk/. /home/source/TMessagesProj/build/outputs/apk