Add Link checker workflow

Signed-off-by: divyansh42 <[email protected]>

.github/workflows/link_check.yml

@@ -0,0 +1,18 @@
+name: Link checker
+on:
+  push:
+    paths:
+      - '**.md'
+  pull_request:
+    paths:
+      -'**.md'
+
+jobs:
+  markdown-link-check:
+    name: Check links in markdown
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: gaurav-nelson/github-action-markdown-link-check@v1
+        with:
+          use-verbose-mode: true

README.md

@@ -3,6 +3,7 @@
 [![CI checks](https://github.com/redhat-actions/push-to-registry/workflows/CI%20checks/badge.svg)](https://github.com/redhat-actions/push-to-registry/actions?query=workflow%3A%22CI+checks%22)
 [![Test Build and Push](https://github.com/redhat-actions/push-to-registry/workflows/Test%20Build%20and%20Push/badge.svg)](https://github.com/redhat-actions/push-to-registry/actions?query=workflow%3A%22Test+Build+and+Push%22)
 [![Multiple container CLI build tests](https://github.com/redhat-actions/push-to-registry/workflows/Multiple%20container%20CLI%20build%20tests/badge.svg)](https://github.com/redhat-actions/push-to-registry/actions?query=workflow%3A%22Multiple+container+CLI+build+tests%22)
+[![Link checker](https://github.com/redhat-actions/push-to-registry/workflows/Link%20checker/badge.svg)](https://github.com/redhat-actions/push-to-registry/actions?query=workflow%3A%22Link+checker%22)
 <br><br>
 [![tag badge](https://img.shields.io/github/v/tag/redhat-actions/push-to-registry)](https://github.com/redhat-actions/push-to-registry/tags)
 [![license badge](https://img.shields.io/github/license/redhat-actions/push-to-registry)](./LICENSE)
@@ -149,15 +150,3 @@ If the action pulled an image from the Docker image storage into the Podman stor
 Note that quay.io repositories are private by default.<br>
 
 This means that if you push an image for the first time, you will have to authenticate before pulling it, or go to the repository's settings and change its visibility.
-
-## Contributing
-
-This is an open source project open to anyone. This project welcomes contributions and suggestions!
-
-## Feedback & Questions
-
-If you discover an issue please file a bug in [GitHub issues](https://github.com/redhat-actions/push-to-registry/issues) and we will fix it as soon as possible.
-
-## License
-
-MIT, See [LICENSE](./LICENSE) for more information.