We're choosing version 18 because if offers support for SSL 3, just
like Ruby 3.1 does.
Note we're symlinking a .nvmrc file as well, in order to make it
compatible with NVM. While the .nvmrc and .node-version files use
different formats, they both support the syntax we're using to
define the version.
The code to install Node.js in the Dockerfile is a simplification of the
code in the Rails Dockerfile template [1].
[1] https://github.com/rails/rails/blob/04c97aec8a/railties/lib/rails/generators/rails/app/templates/Dockerfile.tt#L25
Note we updated the `mail` gem in commit 103742847, which is necesary
for Ruby 3.1 because it adds the net-smtp dependency. The net-smtp
library was removed from Ruby in Ruby 3.1, and if we don't include it,
we get an error:
```
cannot load such file -- net/smtp (LoadError)
```
We're also updating the Bundler version in the Gemfile.lock so it's the
one included in Ruby 3.1. Without updating it, we get a warning:
```
Calling `DidYouMean::SPELL_CHECKERS.merge!(error_name => spell_checker)'
has been deprecated. Please call `DidYouMean.correct_error(error_nam e,
spell_checker)' instead.
```
Finally, in order to make Capistrano work, we need to add a couple more
changes:
* Make the net-ssh gem compatible with SSL 3.0; done in commit b2eec088b
* Explicitly allow aliases in the `deploy-secrets.yml` file because
Psych 4.x (included in Ruby 3.1) doesn't load aliases without this
option
Version 9.4 hasn't been maintained since February 2020, so we aren't
supporting it either. And we might start using `UPSERT` instead of
`find_or_create`, which was introduced in PostgreSQL 9.5.
We're still supporting PostgreSQL 9.5 even if it's also unmaintained
because it has only been officially unmaintained for a couple of months.
This way developers can run the checks on their machines and using
`bundle exec` we guarantee the right versions of all our gems are being
used; with Hound we can only use the versions supported by their
service.
When including the pronto-erb_lint gem, we're getting errors in
development where our ERB does not follow the conventions Better HTML
expects. Since we only use Better HTML because ERB Lint depends on it,
and right now we are not ready to follow its conventions, we're
disabling it.
Note pronto depends on rugged, which requires CMake and pkg-config to
build the `libgit2` library it depends on. CMake and pkg-config are
installed by default in some GNU/Linux distributions like Ubuntu, but
might not be installed on other systems, so we're adding them as
development dependencies.
Using GitHub Actions has a few advantages over using Travis CI:
* More jobs can be run in parallel
* All CONSUL repositories on GitHub will be configured automatically
Besides, Travis have recently changed their policy twice. First, they
announced their site for free software projects would be shut down but
free software projects could still use their site for private projects.
And then, they limited the usage of their services for free software
projects.
Just like we used to do with Travis, we're enabling builds for pull
requests but not for pushed branches.
We're also building the master branch. Even if we never push to the
master branch directly, we're aware other CONSUL repositories do, so
we're running the tests for this case.
Why:
* Try to make the repo more friendly for first time contributors and any contributor on general
How:
* Adding a PRs-welcom badget that links to the issues list filtered by PRs-welcome label
* Adding a Link to on the Contributing guide to a free course about Pull Request and Contributions on Github.
