Move cache instead of copying

In `keep-ecdsa` we've seen a number of workflows failing with `No space
lefton device` error.
The problem was a combination of a big cache size and significant memory
allocation after building Docker image.
According to moby/buildkit#1850:
"At the moment caches are copied over the existing cache so it keeps
growing".
As a temporary fix (until issue gets fixed by GH), we introduced a step
that moves the cache (similarily to how it's described in
moby/buildkit#1896) instead of copying.
Although we havent seen the problems with cache size yet in other
projects than `keep-ecdsa`, we're applying the solution across the
repositories to decrease the likelyhood of encountering problem in the
future.

.github/workflows/client.yml

@@ -80,7 +80,7 @@ jobs:
           # VERSION= ? TODO: Configure version, sample: 1.7.6
           load: true # load image to local registry to use it in next steps
           cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
 
       - name: Run Go tests
         run: |
@@ -108,6 +108,16 @@ jobs:
           tags: ${{ env.GCR_REGISTRY_URL }}/${{ env.GOOGLE_PROJECT_ID }}/${{ env.IMAGE_NAME }}
           labels: revision=${{ github.sha }}
           push: ${{ github.event_name == 'workflow_dispatch' }}
+
+      - # Temp fix - move cache instead of copying (added below step and
+        # modified value of `cache-to`).
+        # https://github.com/docker/build-push-action/issues/252
+        # https://github.com/moby/buildkit/issues/1896
+        # Without the change some jobs were failing with `no space left on device`
+        name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
       
       - name: Notify CI about completion of the workflow
         if: github.event_name == 'workflow_dispatch'

.github/workflows/contracts.yml

@@ -254,7 +254,17 @@ jobs:
             revision=${{ github.sha }}
           push: true
           cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
+
+      - # Temp fix - move cache instead of copying (added below step and
+        # modified value of `cache-to`).
+        # https://github.com/docker/build-push-action/issues/252
+        # https://github.com/moby/buildkit/issues/1896
+        # Without the change some jobs were failing with `no space left on device`
+        name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
       
       - name: Notify CI about completion of the workflow
         uses: keep-network/notify-workflow-completed@v1

.github/workflows/dashboard-testnet.yml

@@ -133,7 +133,17 @@ jobs:
           labels: revision=${{ github.sha }}
           push: ${{ github.event_name == 'workflow_dispatch' }}
           cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
+
+      - # Temp fix - move cache instead of copying (added below step and
+        # modified value of `cache-to`).
+        # https://github.com/docker/build-push-action/issues/252
+        # https://github.com/moby/buildkit/issues/1896
+        # Without the change some jobs were failing with `no space left on device`
+        name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
       
       - name: Notify CI about completion of the workflow
         if: github.event_name == 'workflow_dispatch'