actions-docker/.forgejo/workflows/upload.yml

# Automatic image build and upload workflow
# It does not run on actions-docker:
# 1. to avoid issues, and
# 2. because we don't need it.
name: upload

on:
 - push

jobs:
 upload:
  runs-on: docker
  steps:
   - name: Build container
     uses: https://code.forgejo.org/forgejo/forgejo-build-publish/build@v1
     with:
      forgejo: "${{ env.GITHUB_SERVER_URL }}"
      owner: "${{ env.GITHUB_REPOSITORY_OWNER }}"
      repository: "${{ steps.repository.outputs.value }}"
      doer: "${{ secrets.REGISTRY_USERNAME }}"
      token: "${{ secrets.REGISTRY_TOKEN }}"
      tag-version: "latest"
      platforms: linux/amd64
      binary-name: sh
      binary-path: /bin/sh
      dockerfile: Dockerfile
   - name: Publish container
     uses: https://code.forgejo.org/forgejo/forgejo-build-publish/publish@v1
     with: 
      from-forgejo: "${{ env.GITHUB_SERVER_URL }}"
      from-owner: "${{ env.GITHUB_REPOSITORY_OWNER }}"
      to-forgejo: "${{ env.GITHUB_SERVER_URL }}"
      to-owner: "${{ env.GITHUB_REPOSITORY_OWNER }}"
      to-doer: "${{ secrets.REGISTRY_USERNAME }}"
      to-token: "${{ secrets.REGISTRY_TOKEN }}"