Update to Godot 3.4 about godot-game-template

[davcri]

GitHub push workflow is now working for 3.4 on the dev branch: https://github.com/crystal-bit/godot-game-template/actions/runs/1459507970

I created a new Dockerfile (see below), also the image is on Dockerhub.
It would be great if this work could be upstreamed to abarichello's repo (see #53). Unfortunately the Android SDK is downloaded as a part of the container setup, so build times are increased.

PS: most of the code is taken from abarichello/godot-ci and myood/godot-ci-android-export

FROM ubuntu:focal
LABEL author="https://github.com/crystal-bit/godot-game-template#thanks"

USER root
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    git \
    git-lfs \
    python \
    python-openssl \
    unzip \
    wget \
    zip \
    adb \
    curl \
    openjdk-8-jdk-headless \
    && rm -rf /var/lib/apt/lists/*

ENV GODOT_VERSION "3.4"

RUN wget https://downloads.tuxfamily.org/godotengine/${GODOT_VERSION}/Godot_v${GODOT_VERSION}-stable_linux_headless.64.zip \
    && wget https://downloads.tuxfamily.org/godotengine/${GODOT_VERSION}/Godot_v${GODOT_VERSION}-stable_export_templates.tpz \
    && mkdir ~/.cache \
    && mkdir -p ~/.config/godot \
    && mkdir -p ~/.local/share/godot/templates/${GODOT_VERSION}.stable \
    && unzip Godot_v${GODOT_VERSION}-stable_linux_headless.64.zip \
    && mv Godot_v${GODOT_VERSION}-stable_linux_headless.64 /usr/local/bin/godot \
    && unzip Godot_v${GODOT_VERSION}-stable_export_templates.tpz \
    && mv templates/* ~/.local/share/godot/templates/${GODOT_VERSION}.stable \
    && rm -f Godot_v${GODOT_VERSION}-stable_export_templates.tpz Godot_v${GODOT_VERSION}-stable_linux_headless.64.zip

# Butler CLI tool for itch.io
ADD getbutler.sh /opt/butler/getbutler.sh
RUN bash /opt/butler/getbutler.sh
RUN /opt/butler/bin/butler -V

ENV PATH="/opt/butler/bin:${PATH}"

# Download and install Android SDK
RUN mkdir -p -v /root/android-sdk-installer/cmdline-tools \
    && cd /root/android-sdk-installer/cmdline-tools \
    && curl -fsSLO "https://dl.google.com/android/repository/commandlinetools-linux-6858069_latest.zip" \
    && unzip -q commandlinetools-linux-*.zip \
    && rm commandlinetools-linux-*.zip \
    && mv cmdline-tools latest
ENV ANDROID_HOME /root/android-sdk
# Download and install SDK tools, accept licences, and create debug.keystore
RUN mkdir -p -v /root/.android
RUN echo "count=0" > /root/.android/repositories.cfg
RUN yes | /root/android-sdk-installer/cmdline-tools/latest/bin/sdkmanager --licenses
RUN yes | /root/android-sdk-installer/cmdline-tools/latest/bin/sdkmanager --sdk_root=$ANDROID_HOME "platform-tools" "build-tools;30.0.3" "platforms;android-29" "cmdline-tools;latest" "cmake;3.10.2.4988404" "ndk;21.4.7075529"
   
# Adding android keystore and settings
RUN keytool -keyalg RSA -genkeypair -alias androiddebugkey -keypass android -keystore debug.keystore -storepass android -dname "CN=Android Debug,O=Android,C=US" -validity 9999 \
    && mv debug.keystore /root/debug.keystore
# Initialize Godot so it creates editor_settings-3.tres file, then add android export section, since it is missing at first
RUN godot -e -q
RUN echo 'export/android/adb = "/usr/bin/adb"' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/jarsigner = "/usr/bin/jarsigner"' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/debug_keystore = "/root/debug.keystore"' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/debug_keystore_user = "androiddebugkey"' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/debug_keystore_pass = "android"' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/android_sdk_path = "/root/android-sdk"' >> ~/.config/godot/editor_settings-3.tres 
RUN echo 'export/android/force_system_user = false' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/timestamping_authority_url = ""' >> ~/.config/godot/editor_settings-3.tres
RUN echo 'export/android/shutdown_adb_on_exit = true' >> ~/.config/godot/editor_settings-3.tres