Docker integration

Author: Javernaut

README.md

@@ -42,7 +42,10 @@ On **macOS** or **Linux** just execute the ffmpeg-android-maker.sh script in ter
 
 ~~It is also possible to execute this script on a **Windows** machine with [MSYS2](https://www.msys2.org). You also need to install specific packages to it: *make*, *git*, *diffutils* and *tar*. The script supports both 32-bit and 64-bit versions of Windows. Also see Prerequisites section for necessary software.~~
 
-Since v2.0.0 the **Windows** support is temporary absent, but soon a Docker image will be available to be used on any host OS.
+Since v2.0.0 the MSYS2 support is temporary absent.
+
+Since v2.1.1 the **Windows** support is done with [Docker](https://www.docker.com) tool.
+Check [this WIKI page](https://github.com/Javernaut/ffmpeg-android-maker/wiki/Docker-support) for more info.
 
 ## Requirements
 

tools/docker/Dockerfile

@@ -0,0 +1,45 @@
+FROM ubuntu:19.10
+
+# Arguments that can be overridden in 'docker build' command:
+# Versions of Android SDK, NDK and CMake
+ARG VERSION_SDK=6200805
+ARG VERSION_NDK=21.0.6113669
+ARG VERSION_CMAKE=3.10.2.4988404
+
+# The HOME variable isn't available for ENV directive (during building an image).
+# So we define one manually. For alpine and ubuntu it should be '/root'
+ARG HOME_TWIN=/root
+
+# Creating mandatory environment variables
+ENV ANDROID_SDK_HOME=${HOME_TWIN}/android-sdk
+ENV ANDROID_NDK_HOME=${ANDROID_SDK_HOME}/ndk/${VERSION_NDK}
+
+# Installing basic software
+RUN apt-get update && apt-get install -y \
+  python3 python3-pip python3-setuptools python3-wheel ninja-build \
+  openjdk-8-jdk-headless \
+  curl \
+  unzip \
+  bash \
+  nasm \
+  pkg-config \
+  make
+
+# Meson has to be installed in a different way
+RUN pip3 install meson==0.53.2
+
+# Download the Android SDK
+RUN curl https://dl.google.com/android/repository/commandlinetools-linux-${VERSION_SDK}_latest.zip --output ${HOME_TWIN}/android-sdk.zip
+# Unzip it and remove the archive
+RUN mkdir -p ${HOME_TWIN}/android-sdk && \
+  unzip -qq ${HOME_TWIN}/android-sdk.zip -d ${HOME_TWIN}/android-sdk && \
+  rm ${HOME_TWIN}/android-sdk.zip
+
+# Installing components through the Android SDK
+RUN installAndroidComponent() { yes | ${ANDROID_SDK_HOME}/tools/bin/sdkmanager --sdk_root=${ANDROID_SDK_HOME} $1 > /dev/null; } && \
+  installAndroidComponent "ndk;${VERSION_NDK}" && \
+  installAndroidComponent "cmake;${VERSION_CMAKE}"
+
+# The command to be executed when a container is running
+# Passing additional arguments to the script is done via FAM_ARGS environment variable
+CMD cd /mnt/ffmpeg-android-maker && ./ffmpeg-android-maker.sh ${FAM_ARGS}