How to install a new Gem and deploy it with Github Actions ?

[PierreExeter]

Hi,

I'm trying to install a new Gem called jekyll-redirect-from, which allows me to redirect a path to an external URL.

Here's what I did :

1. I added the gem in the Gemfile.
2. I added the jekyll-redirect-from plugin in the _config.yml file
3. I added redirect_to: <ULR> in the YAML front matter of the page I want to redirect.
4. I re-built the Docker image with $ docker compose up --build --force-recreate

When I run the Docker image locally, I can successfully redirect the page to the external URL.

However, when I commit and push the changes to the GitHub repository, the redirection does not work.

There is no build or deployment error when I check the Actions Workflow tab in the GitHub repository.

I'm guessing it is because GitHub Pages does not support this gem by default, and that I need to set up the GitHub Action workflow to install this Gem in GitHub Pages.

My guess is that I need to add run: bundle install somewhere in .github/workflows/deploy.yml, but I don't know where.

How can I install a new Gem and deploy it using Github Actions ?

Here is my repo.

Thanks !