name: Build Docker image on push

on:
  push:
    branches:
      - '**'

jobs:
  docker:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set variables
        shell: bash
        run: |
          echo "IMAGE_NAME=gitea.lostak.dev/lostakj/postfix" >> "$GITHUB_ENV"
          echo "IMAGE_TAG=${GITHUB_SHA::7}" >> "$GITHUB_ENV"

      - name: Login to Gitea registry
        shell: bash
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login gitea.lostak.dev -u "${{ secrets.REGISTRY_USER }}" --password-stdin

      - name: Create buildx builder
        shell: bash
        run: |
          docker buildx create --name ci-builder --use || docker buildx use ci-builder
          docker buildx inspect --bootstrap

      - name: Build and push image
        shell: bash
        run: |
          docker buildx build \
            --platform linux/amd64 \
            -t "${IMAGE_NAME}:${IMAGE_TAG}" \
            .