Merge branch 'eread/cherry-pick-contribution' into 'master'

Use case insensitive grep in docs

See merge request gitlab-org/gitlab!70882

doc/user/packages/dependency_proxy/index.md

@@ -227,7 +227,7 @@ script:
 
 ```shell
 # Note, you must have jq installed to run this command
-TOKEN=$(curl "https://auth.docker.io/token?service=registry.docker.io&scope=repository:ratelimitpreview/test:pull" | jq --raw-output .token) && curl --head --header "Authorization: Bearer $TOKEN" "https://registry-1.docker.io/v2/ratelimitpreview/test/manifests/latest" 2>&1 | grep RateLimit
+TOKEN=$(curl "https://auth.docker.io/token?service=registry.docker.io&scope=repository:ratelimitpreview/test:pull" | jq --raw-output .token) && curl --head --header "Authorization: Bearer $TOKEN" "https://registry-1.docker.io/v2/ratelimitpreview/test/manifests/latest" 2>&1 | grep --ignore-case RateLimit
 ...
 ```