more gha tweaks

.github/workflows/docker-build-and-push.yml

@@ -89,7 +89,7 @@ jobs:
           platforms: linux/amd64,linux/arm64,linux/arm/v7
           builder: ${{ steps.buildx.outputs.name }}
           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
           # don't push during a pull_request, only build
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.docker_meta.outputs.tags }}

.github/workflows/linter.yml

@@ -51,4 +51,8 @@ jobs:
         env:
           VALIDATE_ALL_CODEBASE: false
           DEFAULT_BRANCH: main
+          # turn off dockerfilelint, as its a dead project
+          # https://github.com/replicatedhq/dockerfilelint/issues/169
+          # hadolint will run and is sufficent (no need for two linters)
+          VALIDATE_DOCKERFILE: false
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}