Keeping our packages up to date on Hex.pm is something we all forget too easily. This GitHub Action publishes your code to Hex.pm automatically using Rebar3. This is most useful when you tag your repository.

1. First, create a key on your Hex.pm dashboard.

2. Next, add the key from step 1 to your GitHub repository’s secrets. Call it HEX_API_KEY.

3. Finally, use this GitHub Action in your workflow:

   on:
     push:
       tags:
         - '*'
   
   jobs:
     publish:
       runs-on: ubuntu-latest
       steps:
         - name: Check out
           uses: actions/checkout@v3
   
         - name: Publish to Hex.pm
           uses: erlangpack/github-action@v3
           env:
             HEX_API_KEY: ${{ secrets.HEX_API_KEY }}