build_and_push.yml

name: Build and Push Docker Image

on:
  push:
    branches:
      - '*'

env:
  DOCKERHUB_USERNAME: jordotech
  DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
  IMAGE_NAME: fastapi-slackbot

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Get branch name
        id: branch_name
        run: echo ::set-output name=branch::${GITHUB_REF#refs/heads/}
      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ env.DOCKERHUB_USERNAME }}
          password: ${{ env.DOCKERHUB_PASSWORD }}
      - name: Build and push Docker image
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          tags: ${{ env.DOCKERHUB_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.branch_name.outputs.branch }}