GitHub action to build a Java Maven library and publish it to GitHub Packages and Maven Central.

• Your project need to use Maven
• Create an account on Sonatype
• Create a JIRA ticket on Sonatype to approve your groupId (io.github.YOUR-GITHUB-USERNAME)
• Generate a gpg key and distribute the public key to a keyserver

Create your GitHub secrets on your repository:

• NEXUS_USERNAME with your username used on Sonatype
• NEXUS_PASSWORD with your password used on Sonatype
• GPG_PRIVATE_KEY with the private key of your generated pgp key
  • to get the private key gpg --armor --export-secret-key <key-id> > privkey.asc
• GPG_PASSPHRASE with the passphrase of your gpg key

Inside your pom.xml file you need to set:

• the good groupId (io.github.YOUR-GITHUB-USERNAME)
• a description
• a license
• the developers
• issueManagement
• scm
• the ossrhDeploy profile
• the githubDeploy profile

For more details you can look pom-example.xml

The workflow, usually declared in .github/workflows/library-publish.yml, looks like:

name: Java library publisher
on:
  release:
    types: [created]
jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Maven Library build and publish
        uses: MathieuSoysal/[email protected]
        with:
          nexus-username: ${{ secrets.NEXUS_USERNAME }}
          nexus-password: ${{ secrets.NEXUS_PASSWORD }}
          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
          gpg-passphrase: ${{ secrets.GPG_PASSPHRASE }}
          github-token: ${{ secrets.GITHUB_TOKEN }}
          java-version: 17

Don't forget to add your own MavenCentral badges to your readme 😉:

• to get your maven-central badge : https://shields.io/category/platform-support

The Dockerfile and associated scripts and documentation in this project are released under the Apache 2.0 License.