ci: add check for duplicate target paths / aliases

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

.github/workflows/build.yml

@@ -57,6 +57,7 @@ jobs:
           - unused-media
           - test-go-redirects
           - dockerfile-lint
+          - path-warnings
     steps:
       -
         name: Checkout

Dockerfile

@@ -109,6 +109,18 @@ set -ex
 ./scripts/test_unused_media.sh
 EOT
 
+# path-warnings checks for duplicate target paths
+FROM build-base AS path-warnings
+RUN hugo --printPathWarnings > /path-warnings.txt
+RUN <<EOT
+DUPLICATE_TARGETS=$(grep "Duplicate target paths" /path-warnings.txt)
+if [ ! -z "$DUPLICATE_TARGETS" ]; then
+    echo "$DUPLICATE_TARGETS"
+    echo "You probably have a duplicate alias defined. Please check your aliases."
+    exit 1
+fi
+EOT
+
 # pagefind installs the Pagefind runtime
 FROM base AS pagefind
 ARG PAGEFIND_VERSION=1.1.0

docker-bake.hcl

@@ -32,7 +32,7 @@ target "release" {
 }
 
 group "validate" {
-  targets = ["lint", "test", "unused-media", "test-go-redirects", "dockerfile-lint"]
+  targets = ["lint", "test", "unused-media", "test-go-redirects", "dockerfile-lint", "path-warnings"]
 }
 
 target "test" {
@@ -63,6 +63,11 @@ target "dockerfile-lint" {
   call = "check"
 }
 
+target "path-warnings" {
+  target = "path-warnings"
+  output = ["type=cacheonly"]
+}
+
 #
 # releaser targets are defined in _releaser/Dockerfile
 # and are used for AWS S3 deployment