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capsule/docs/contributing.md
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# How to contribute to Capsule
First, thanks for your interest in Capsule, any contribution is welcome!
## Development environment setup
The first step is to set up your local development environment.
Please follow the [Capsule Development Guide](dev-guide.md) for details.
## Code convention
The changes must follow the Pull Request method where a _GitHub Action_ will
check the `golangci-lint`, so ensure your changes respect the coding standard.
### golint
You can easily check them issuing the _Make_ recipe `golint`.
```
# make golint
golangci-lint run -c .golangci.yml
```
> Enabled linters and related options are defined in the [.golanci.yml file](../../.golangci.yml)
### goimports
Also, the Go import statements must be sorted following the best practice:
```
<STANDARD LIBRARY>
<EXTERNAL PACKAGES>
<LOCAL PACKAGES>
```
To help you out you can use the _Make_ recipe `goimports`
```
# make goimports
goimports -w -l -local "github.com/clastix/capsule" .
```
### Commits
All the Pull Requests must refer to an already open issue: this is the first phase to contribute also for informing maintainers about the issue.
Commit's first line should not exceed 50 columns.
A commit description is welcomed to explain more the changes: just ensure
to put a blank line and an arbitrary number of maximum 72 characters long
lines, at most one blank line between them.
Please, split changes into several and documented small commits: this will help us to perform a better review. Commits must follow the Conventional Commits Specification, a lightweight convention on top of commit messages. It provides an easy set of rules for creating an explicit commit history; which makes it easier to write automated tools on top of. This convention dovetails with Semantic Versioning, by describing the features, fixes, and breaking changes made in commit messages. See [Conventional Commits Specification](https://www.conventionalcommits.org) to learn about Conventional Commits.
> In case of errors or need of changes to previous commits,
> fix them squashing to make changes atomic.
### Miscellanea
Please, add a new single line at end of any file as the current coding style.