Add step to clean up runner space for docker action

Author: XkunW

.github/workflows/docker.yml

@@ -23,6 +23,13 @@ jobs:
     name: Push Docker image to Docker Hub
     runs-on: ubuntu-latest
     steps:
+      - name: Maximize build space
+        uses: easimon/maximize-build-space@master
+        with:
+          root-reserve-mb: 512
+          swap-size-mb: 1024
+          remove-dotnet: 'true'
+
       - name: Checkout repository
         uses: actions/[email protected]