Adding SECURITY.md

CONTRIBUTING.md

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+# Contributing to this repository
+
+We welcome your contributions! There are multiple ways to contribute.
+
+## Opening issues
+
+For bugs or enhancement requests, please file a GitHub issue unless it's
+security related. When filing a bug remember that the better written the bug is,
+the more likely it is to be fixed. If you think you've found a security
+vulnerability, do not raise a GitHub issue and follow the instructions in our
+[security policy](./SECURITY.md).
+
+## Contributing code
+
+We welcome your code contributions. Before submitting code via a pull request,
+you will need to have signed the [Oracle Contributor Agreement][OCA] (OCA) and
+your commits need to include the following line using the name and e-mail
+address you used to sign the OCA:
+
+```text
+Signed-off-by: Your Name <[email protected]>
+```
+
+This can be automatically added to pull requests by committing with `--sign-off`
+or `-s`, e.g.
+
+```text
+git commit --signoff
+```
+
+Only pull requests from committers that can be verified as having signed the OCA
+can be accepted.
+
+## Pull request process
+
+1. Ensure there is an issue created to track and discuss the fix or enhancement
+   you intend to submit.
+1. Fork this repository.
+1. Create a branch in your fork to implement the changes. We recommend using
+   the issue number as part of your branch name, e.g. `1234-fixes`.
+1. Ensure that any documentation is updated with the changes that are required
+   by your change.
+1. Ensure that any samples are updated if the base image has been changed.
+1. Submit the pull request. *Do not leave the pull request blank*. Explain exactly
+   what your changes are meant to do and provide simple steps on how to validate.
+   your changes. Ensure that you reference the issue you created as well.
+1. We will assign the pull request to 2-3 people for review before it is merged.
+
+## Code of conduct
+
+Follow the [Golden Rule](https://en.wikipedia.org/wiki/Golden_Rule). If you'd
+like more specific guidelines, see the [Contributor Covenant Code of Conduct][COC].
+
+[OCA]: https://oca.opensource.oracle.com
+[COC]: https://www.contributor-covenant.org/version/1/4/code-of-conduct/