Add gitpod config

this commit adds support for Gitpod.io, a free automated
dev environment that makes contributing and generally working on GitHub
projects much easier. It allows anyone to start a ready-to-code dev
environment for any branch, issue and pull request with a single click.

Author: Monster-Gaming-Studios

.gitpod.Dockerfile

@@ -1,10 +1,8 @@
-FROM gitpod/workspace-full
-                    
-USER gitpod
+FROM gitpod/workspace-full:latest
 
-# Install custom tools, runtime, etc. using apt-get
-# For example, the command below would install "bastet" - a command line tetris clone:
-#
-# RUN sudo apt-get -q update && #     sudo apt-get install -yq bastet && #     sudo rm -rf /var/lib/apt/lists/*
-#
-# More information: https://www.gitpod.io/docs/config-docker/
+ENV ANDROID_HOME=/workspace/android-sdk \
+    FLUTTER_ROOT=/workspace/flutter \
+    FLUTTER_HOME=/workspace/flutter
+
+RUN bash -c ". /home/gitpod/.sdkman/bin/sdkman-init.sh \
+             && sdk install java 8.0.242.j9-adpt"

.gitpod.yml

@@ -1,6 +1,27 @@
-tasks:
-  - init: echo "Replace me with a build script for the project."
-    command: echo "Replace me with something that should run on every start, or just
-      remove me entirely."
 image:
-  file: .gitpod.Dockerfile
+  file: .gitpod.dockerfile
+
+tasks:
+- before: |
+    export PATH=$FLUTTER_HOME/bin:$ANDROID_HOME/bin:$ANDROID_HOME/platform-tools:$PATH
+    mkdir -p /home/gitpod/.android
+    touch /home/gitpod/.android/repositories.cfg
+  init: |
+    echo "Installing Flutter SDK..."
+    cd /workspace && wget -qO flutter_sdk.tar.xz https://storage.googleapis.com/flutter_infra/releases/stable/linux/flutter_linux_v1.12.13+hotfix.7-stable.tar.xz && tar -xf flutter_sdk.tar.xz && rm -f flutter_sdk.tar.xz
+    echo "Installing Android SDK..."
+    mkdir -p /workspace/android-sdk && cd /workspace/android-sdk && wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip && unzip sdk-tools-linux-4333796.zip && rm -f sdk-tools-linux-4333796.zip
+    /workspace/android-sdk/tools/bin/sdkmanager "platform-tools" "platforms;android-28" "build-tools;28.0.3"
+    echo "Init Flutter..."
+    cd /workspace/A_Guide_to_Running_Tensorflow_Models_on_Android
+    flutter upgrade
+    flutter doctor --android-licenses
+    flutter pub get
+  command: |
+    flutter pub upgrade
+    echo "Ready to go!"
+    flutter doctor
+vscode:
+  extensions:
+    - [email protected]:Wg2nTABftVR/Dry4tqeY1w==
+    - [email protected]:/kOacEWdiDRLyN/idUiM4A==