Free disk space

.github/workflows/build.yml

@@ -148,6 +148,21 @@ jobs:
         base: [base]
     steps:
     - uses: actions/checkout@v2
+    - name: Free Disk Space (Ubuntu)
+      uses: jlumbroso/free-disk-space@main
+      with:
+        # this might remove tools that are actually needed,
+        # if set to "true" but frees about 6 GB
+        tool-cache: false
+
+        # all of these default to true, but feel free to set to
+        # "false" if necessary for your workflow
+        android: true
+        dotnet: true
+        haskell: true
+        large-packages: true
+        docker-images: true
+        swap-storage: true
     - name: Build
       run: >
         docker build