Add bug report template

Add CONTRIBUTING and SUPPORT guidelines

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/CONTRIBUTING.md

@@ -0,0 +1,29 @@
+## Contributing
+
+Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
+
+Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [project's open source license](LICENSE).
+
+## Submitting a pull request
+
+1. [Fork](https://github.com/docker/setup-buildx-action/fork) and clone the repository
+2. Configure and install the dependencies: `yarn install`
+3. Make sure the tests pass on your machine: `yarn run test`
+4. Create a new branch: `git checkout -b my-branch-name`
+5. Make your change, add tests, and make sure the tests still pass
+6. Run pre-checkin: `yarn run pre-checkin`
+7. Push to your fork and [submit a pull request](https://github.com/docker/setup-buildx-action/compare)
+8. Pat your self on the back and wait for your pull request to be reviewed and merged.
+
+Here are a few things you can do that will increase the likelihood of your pull request being accepted:
+
+- Make sure the `README.md` and any other relevant **documentation are kept up-to-date**.
+- We try to follow [SemVer v2.0.0](https://semver.org/). Randomly breaking public APIs is not an option.
+- Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as **separate pull requests**.
+- Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+## Resources
+
+- [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
+- [Using Pull Requests](https://help.github.com/articles/about-pull-requests/)
+- [GitHub Help](https://help.github.com)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,33 @@
+---
+name: Bug report
+about: Create a report to help us improve
+---
+
+### Behaviour
+
+#### Steps to reproduce this issue
+
+1.
+2.
+3.
+
+#### Expected behaviour
+
+> Tell us what should happen
+
+#### Actual behaviour
+
+> Tell us what happens instead
+
+### Configuration
+
+* Repository URL (if public): 
+* Build URL (if public): 
+
+```yml
+# paste your YAML workflow file here and remove sensitive data
+```
+
+### Logs
+
+> Download the [log file of your build](https://help.github.com/en/actions/configuring-and-managing-workflows/managing-a-workflow-run#downloading-logs) and [attach it](https://help.github.com/en/github/managing-your-work-on-github/file-attachments-on-issues-and-pull-requests) to this issue.

.github/SUPPORT.md

@@ -0,0 +1,31 @@
+# Support [![](https://isitmaintained.com/badge/resolution/docker/setup-buildx-action.svg)](https://isitmaintained.com/project/docker/setup-buildx-action)
+
+First, [be a good guy](https://github.com/kossnocorp/etiquette/blob/master/README.md).
+
+## Reporting an issue
+
+Please do a search in [open issues](https://github.com/docker/setup-buildx-action/issues?utf8=%E2%9C%93&q=) to see if the issue or feature request has already been filed.
+
+If you find your issue already exists, make relevant comments and add your [reaction](https://github.com/blog/2119-add-reactions-to-pull-requests-issues-and-comments). Use a reaction in place of a "+1" comment.
+
+:+1: - upvote
+
+:-1: - downvote
+
+If you cannot find an existing issue that describes your bug or feature, submit an issue using the guidelines below.
+
+## Writing good bug reports and feature requests
+
+File a single issue per problem and feature request.
+
+* Do not enumerate multiple bugs or feature requests in the same issue.
+* Do not add your issue as a comment to an existing issue unless it's for the identical input. Many issues look similar, but have different causes.
+
+The more information you can provide, the more likely someone will be successful reproducing the issue and finding a fix.
+
+You are now ready to [create a new issue](https://github.com/docker/setup-buildx-action/issues/new/choose)!
+
+## Closure policy
+
+* Issues that don't have the information requested above (when applicable) will be closed immediately and the poster directed to the support guidelines.
+* Issues that go a week without a response from original poster are subject to closure at our discretion.

README.md

@@ -57,11 +57,7 @@ If you want support for more platforms you can use our [setup-qemu](https://gith
 name: ci
 
 on:
-  pull_request:
-    branches: master
   push:
-    branches: master
-    tags:
 
 jobs:
   buildx: