add support for building via a docker container [remote dev]

docker/Dockerfile

@@ -0,0 +1,84 @@
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND noninteractive
+ENV ANDROID_SDK_ROOT /opt/android-sdk-linux
+ENV PATH "${PATH}:/opt/flutter/bin:/root/.pub-cache/bin:${ANDROID_SDK_ROOT}/cmdline-tools/latest/bin:/opt/android-sdk-linux/platform-tools"
+
+ENV HOME=/root
+
+# Prereqs
+RUN \
+    apt-get update &&\
+    apt-get install -y --no-install-recommends \
+        bash \
+        curl \
+        file \
+        git 2.x \
+        unzip \
+        xz-utils \
+        zip \
+        libglu1-mesa \
+        libxi-dev \
+        libxmu-dev \
+        libglu1-mesa-dev \
+        git-lfs \
+        openssl \
+        wget
+
+# Build prereqs
+RUN \
+    apt-get install -y \
+        cmake curl git wget unzip libgconf-2-4 gdb libstdc++6 libglu1-mesa fonts-droid-fallback lib32stdc++6 python3 sed \
+        cmake ninja-build build-essential libgl1-mesa-dev libegl1-mesa-dev libgles2-mesa-dev clang pkg-config libgtk-3-dev \
+        liblzma-dev libmount-dev libblkid-dev libgcrypt20-dev libgpg-error-dev libssl-dev libpng-dev libjpeg-dev \
+        libtiff-dev libgif-dev libgtk-3-dev
+
+# Android SDK prequisites
+# https://developer.android.com/studio#command-tools
+RUN \
+    apt-get install -y --no-install-recommends \
+        git \
+        git-lfs \
+        openssl \
+        wget \
+        unzip
+# Android SDK
+RUN \
+    wget --quiet  https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/tools.zip && \
+    mkdir -p ${ANDROID_SDK_ROOT}/cmdline-tools && \
+    unzip -q /tmp/tools.zip -d ${ANDROID_SDK_ROOT}/cmdline-tools && \
+    mv ${ANDROID_SDK_ROOT}/cmdline-tools/cmdline-tools ${ANDROID_SDK_ROOT}/cmdline-tools/latest && \
+    rm -v /tmp/tools.zip && \
+    mkdir -p /root/.android/ && touch /root/.android/repositories.cfg &&\
+    apt-get install -y --no-install-recommends openjdk-17-jdk openjdk-17-jre &&\
+    yes | sdkmanager --licenses &&\
+    sdkmanager --update
+# Platform tools
+# Get latest with sdkmanager --list
+RUN sdkmanager --install "build-tools;33.0.1"
+RUN sdkmanager --install "ndk;26.3.11579264"
+RUN sdkmanager --install "cmake;3.31.4"
+RUN sdkmanager --install platform-tools
+RUN sdkmanager --install emulator
+RUN sdkmanager --install tools
+RUN sdkmanager --install "platforms;android-28"
+RUN sdkmanager --install "platforms;android-31"
+RUN sdkmanager --install "platforms;android-33"
+RUN sdkmanager --install "platforms;android-35"
+RUN sdkmanager --install "platforms;android-34"
+RUN sdkmanager --install "platforms;android-32"
+
+# Flutter
+ARG DEV_UID=0
+RUN \
+    wget --quiet https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.29.0-stable.tar.xz -O /tmp/flutter.tar.xz &&\
+    mkdir -p /opt &&\
+    cd /opt &&\
+    tar xf /tmp/flutter.tar.xz &&\
+    rm /tmp/flutter.tar.xz &&\
+    git config --global --add safe.directory /opt/flutter &&\
+    dart pub global activate cider &&\
+    chown -R ${DEV_UID} /opt/flutter
+RUN flutter --disable-analytics
+RUN flutter upgrade
+RUN chmod a+w /opt/flutter/packages -R