Fix CI (#5)

Author: dominicletz

.github/workflows/ci.yml

@@ -9,18 +9,16 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
-    - name: Install Elixir
+    - name: Install asdf, erlang, elixir
       run: |
-        wget https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb && sudo dpkg -i erlang-solutions_2.0_all.deb
-        sudo apt-get update
-        sudo apt-get install esl-erlang inotify-tools
-        mkdir $HOME/elixir && cd $HOME/elixir
-        wget https://github.com/elixir-lang/elixir/releases/download/v1.11.4/Precompiled.zip
-        unzip Precompiled.zip
-        echo "$HOME/elixir/bin" >> $GITHUB_PATH
+        sudo apt install curl git
+        git clone https://github.com/asdf-vm/asdf.git $HOME/.asdf --branch v0.10.2
+        . $HOME/.asdf/asdf.sh
+        asdf plugin-add erlang
+        asdf plugin-add elixir
 
-    - name: Set up hex & rebar
-      run: |
+        cd app 
+        asdf install
         mix local.hex --force
         mix local.rebar --force
 
@@ -30,7 +28,9 @@ jobs:
         java-version: 11
 
     - name: Build with Gradle
-      run: bash ./gradlew assembleDebug --stacktrace
+      run: |
+        . $HOME/.asdf/asdf.sh
+        ./gradlew assembleDebug --stacktrace
 
     - name: Upload APK
       uses: actions/upload-artifact@v1

app/.tool-versions

@@ -1,4 +1,2 @@
-Erlang 25.0.4
 erlang 25.0.4
-Elixir 1.13.4-otp-25
 elixir 1.13.4-otp-25