Add caching support for Docker builds in GitHub Actions (#6)

Author: mglaman

.github/workflows/BuildDockerImage.yml

@@ -38,5 +38,7 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm64
           push: false
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

.github/workflows/PublishDockerImage.yml

@@ -55,6 +55,8 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm64
           push: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}