Merge pull request #1096 from lightninglabs/docker-build

GitHub: make Docker build more reliable

Author: guggero

.github/workflows/docker.yml

@@ -25,6 +25,9 @@ jobs:
   main:
     runs-on: ubuntu-latest
     steps:
+      - name: cleanup space
+        run: rm -rf /opt/hostedtoolcache
+  
       - name: Set up QEMU
         uses: lightninglabs/gh-actions/[email protected]
 
@@ -62,8 +65,11 @@ jobs:
           tags: "${{ env.DOCKER_ORG }}/${{ env.DOCKER_REPO }}:${{ env.IMAGE_TAG }}"
           build-args: checkout=${{ env.RELEASE_VERSION }}
 
-      - name: Clear the build cache
+      - name: Clear the Docker build cache
         run: docker builder prune -a -f
+        
+      - name: Clear the Docker image cache
+        run: docker image prune -a -f
 
       - name: Build and push image with /lit path
         id: docker_build2