BETA: Base Dockerfile for developing on Android 12 (API level 31), in VSCode with GrapheneOS, in particular.

android12.dockerfile

# [Choice] Ubuntu version: bionic, focal
ARG VARIANT="focal"
FROM mcr.microsoft.com/vscode/devcontainers/base:0-${VARIANT}

# Guide for figuring out what to install:
## https://gist.github.com/mtsahakis/f7893e3b5f0785dd99f304b4822d9b61
# Installing `repo`
## https://source.android.com/setup/develop#installing-repo
# Android version -> API level mapping:
## https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels
# GrapheneOS releases:
## https://grapheneos.org/releases#2021112123
# Pixel 6:
## https://github.com/GrapheneOS/platform_manifest/releases/tag/SD1A.210817.037.2021112123

ENV SDK_ROOT="/opt/android"
ENV PATH="${SDK_ROOT}:${SDK_ROOT}/platform-tools:${SDK_ROOT}/cmdline-tools/bin:${PATH}"

#hadolint ignore=DL3008
RUN export DEBIAN_FRONTEND=noninteractive  \
    && dpkg --add-architecture i386  \
    && apt-get update  \
    && apt-get -y install --no-install-recommends  \
        apt-file  \
        build-essential  \
        gnupg  \
        git  \
        wget  \
        unzip  \
        openjdk-8-jdk-headless  \
        jq  \
        libfreetype6  \
        diffutils  \
        rsync  \
        zip  \
        openssl  \
        e2fsprogs  \
        libncurses5-dev  \
        python3  \
        python-is-python3  \
        file  \
        signify  \
    && KEY_ID="8BB9AD793E8E6153AF0F9A4416530D5E920F5C65"  \
    && if [ -f "./${KEY_ID}.pem" ]; then \
         gpg --quiet --batch --import ".devcontainer/${KEY_ID}.pem";  \
       else  \
         echo >&2 "It is safer to download the public key for Key ID '${KEY_ID}' prior to building the image.";  \
         gpg --quiet --batch  --keyserver "keys.openpgp.org" --recv-key "${KEY_ID}";  \
       fi  \
    && mkdir -p "${SDK_ROOT}"  \
    && curl -so "${REPO=${SDK_ROOT}/repo}" "https://storage.googleapis.com/git-repo-downloads/repo"  \
    && curl -s "https://storage.googleapis.com/git-repo-downloads/repo.asc" | gpg --quiet --batch --verify - "${REPO}"  \
    && chmod +x "${REPO}"  \
    && wget -qO "${ZIP=commandlinetools-linux-7583922_latest.zip}" "https://dl.google.com/android/repository/${ZIP}"  \
    && printf "%s\t%s\n" "124f2d5115eee365df6cf3228ffbca6fc3911d16f8025bebd5b1c6e2fcfa7faf" "$ZIP" | sha256sum --strict --quiet --check  \
    && unzip -qd "${SDK_ROOT}" "${ZIP}"  \
    && rm -f "${ZIP}"  \
    && echo y | sdkmanager --sdk_root="${SDK_ROOT}" --channel=0 --install  \
        "platform-tools"  \
        "platforms;android-31"  \
        "build-tools;31.0.0"  \
        "emulator"  \
        "ndk;23.1.7779620"  \
        "cmake;3.18.1"  \
    && apt-get autoremove -y  \
    && apt-get clean  \
    && rm -rf /var/lib/apt/lists/*