Merge pull request moby#5248 from tonistiigi/dockerfile-validate

ci: enable validating all Dockerfiles

Author: crazy-max

Dockerfile

@@ -354,7 +354,7 @@ exec dlv exec /usr/bin/buildkitd \\
   --continue \\
   -- "\$@"
 EOF
-ENV DELVE_PORT 5000
+ENV DELVE_PORT=5000
 ENTRYPOINT ["/docker-entrypoint.sh"]
 
 FROM binaries AS buildkit-darwin

docker-bake.hcl

@@ -126,7 +126,7 @@ target "integration-tests" {
 }
 
 group "validate" {
-  targets = ["lint", "validate-vendor", "validate-doctoc", "validate-generated-files", "validate-archutil", "validate-shfmt", "validate-docs", "validate-docs-dockerfile"]
+  targets = ["lint", "validate-vendor", "validate-doctoc", "validate-dockerfile", "validate-generated-files", "validate-archutil", "validate-shfmt", "validate-docs", "validate-docs-dockerfile"]
 }
 
 target "lint" {
@@ -218,6 +218,28 @@ target "validate-docs-dockerfile" {
   output = ["type=cacheonly"]
 }
 
+target "validate-dockerfile" {
+  matrix = {
+    dockerfile = [
+      "Dockerfile",
+      "./hack/dockerfiles/archutil.Dockerfile",
+      "./hack/dockerfiles/authors.Dockerfile",
+      "./hack/dockerfiles/docs-dockerfile.Dockerfile",
+      "./hack/dockerfiles/docs.Dockerfile",
+      "./hack/dockerfiles/doctoc.Dockerfile",
+      "./hack/dockerfiles/generated-files.Dockerfile",
+      "./hack/dockerfiles/govulncheck.Dockerfile",
+      "./hack/dockerfiles/lint.Dockerfile",
+      "./hack/dockerfiles/shfmt.Dockerfile",
+      "./hack/dockerfiles/vendor.Dockerfile",
+      "./frontend/dockerfile/cmd/dockerfile-frontend/Dockerfile",
+    ]
+  }
+  name = "validate-dockerfile-${md5(dockerfile)}"
+  dockerfile = dockerfile
+  call = "check"
+}
+
 target "vendor" {
   inherits = ["_common"]
   dockerfile = "./hack/dockerfiles/vendor.Dockerfile"

hack/dockerfiles/vendor.Dockerfile

@@ -38,7 +38,9 @@ RUN --mount=target=/context \
   fi
 EOT
 
-FROM psampaz/go-mod-outdated:${MODOUTDATED_VERSION} AS go-mod-outdated
+FROM --platform=linux/amd64 psampaz/go-mod-outdated:${MODOUTDATED_VERSION} AS go-mod-outdated-amd64
+
+FROM go-mod-outdated-amd64 AS go-mod-outdated
 FROM base AS outdated
 RUN --mount=target=.,rw \
   --mount=target=/go/pkg/mod,type=cache \