Disable some dockerfile lint rules

Author: samizdam

.github/linters/.hadolint.yaml

@@ -0,0 +1,4 @@
+ignored:
+  - DL3003
+  - DL3008
+  - DL4006

.github/workflows/ci.yml

@@ -7,8 +7,8 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.1', '7.2', '7.3', '7.4', '8.0']
-        prefer: ['lowest', 'stable']
+        php: [ '7.1', '7.2', '7.3', '7.4', '8.0' ]
+        prefer: [ 'lowest', 'stable' ]
 
     name: Test on PHP ${{ matrix.php }} with ${{ matrix.prefer }} composer prefer option
     runs-on: ubuntu-latest
@@ -62,4 +62,4 @@ jobs:
         env:
           FILTER_REGEX_EXCLUDE: .*vendor.*
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          VALIDATE_PHP_PSALM: false
+          VALIDATE_PHP_PSALM: false