Deploy on docker using github actions

• You just need to set up RENDER_DEPLOY_HOOK_URL,DOCKER_USER,DOCKER_PASSWORD,REPO_NAME secrets in Settings.

And go in folder where Dockerfile is, in my case backend/ folder
run: docker build backend/ --file backend/Dockerfile --tag $DOCKER_USER/$REPO_NAME:${{ steps.date.outputs.date }}

name: Deploy docker starting

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

# Env variable
env:
  DOCKER_USER: ${{secrets.DOCKER_USER}}
  DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
  REPO_NAME: ${{secrets.REPO_NAME}}
  deploy_url: ${{ secrets.RENDER_DEPLOY_HOOK_URL }}

jobs:
  push-image-to-docker-hub:  # job name
    runs-on: ubuntu-latest  # runner name : (ubuntu latest version) 
    steps:
    - uses: actions/checkout@v2 # first action : checkout source code
    - name: docker login
      run: | # log into docker hub account
        docker login -u $DOCKER_USER -p $DOCKER_PASSWORD  
    - name: Get current date # get the date of the build
      id: date
      run: echo "date=$(date +'%Y-%m-%d--%M-%S')" >> $GITHUB_OUTPUT

    - name: Build the Docker image # push The image to the docker hub
      run: docker build backend/ --file backend/Dockerfile --tag $DOCKER_USER/$REPO_NAME:${{ steps.date.outputs.date }}
    - name: Docker Push
      run: docker push $DOCKER_USER/$REPO_NAME:${{ steps.date.outputs.date }}

    # https://render.com/docs/deploy-hooks#using-with-github-actions
    - name: Deploy on Render
      run: 
        curl "$deploy_url"

maybe it should use

run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USER }}" --password-stdin