ci: simplify Hadolint config

.github/workflows/ci.yml

@@ -12,10 +12,7 @@ jobs:
           - name: Checkout
             uses: actions/checkout@v3
           - name: Lint Dockerfile
-            uses: hadolint/hadolint-action@master
-            with:
-                dockerfile: Dockerfile
-                ignore: DL3007,DL3018 # Ignore using latest on mlocati/php-extension-installer & version in apk add
+            uses: hadolint/hadolint-action@v3.1.0
     build:
         name: Docker build
         runs-on: ubuntu-latest

Dockerfile

@@ -7,6 +7,7 @@
 # Builder images
 FROM composer/composer:2-bin AS composer
 
+# hadolint ignore=DL3007
 FROM mlocati/php-extension-installer:latest AS php_extension_installer
 
 # Build Caddy with the Mercure and Vulcain modules
@@ -36,6 +37,7 @@ WORKDIR /srv/app
 COPY --from=php_extension_installer --link /usr/bin/install-php-extensions /usr/local/bin/
 
 # persistent / runtime deps
+# hadolint ignore=DL3018
 RUN apk add --no-cache \
 		acl \
 		fcgi \