I want to build my image and push it to dockerhub using github actions.This is

CodePudding user response：

You are not having env.IMAGE data. Below piece of code should do the job.

      - name: Build and push
        run: docker build -t ${{ env.IMAGE }}:${{ github.sha }} .
        env:
          IMAGE: shirzadi/ehsan
           

      - name: Push it!
        run: docker push ${{ env.IMAGE }}:${{ github.sha }}
        env:
          IMAGE: shirzadi/ehsan

CodePudding user response：

You are using environment variables that don't exist. According to docker/build-push-action@v2 documentation it can build, tag and push your image in a single step:

jobs:
  docker:
    steps:
      # ...
      -
        name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          tags: shirzadi/ehsan:latest,shirzadi/ehsan:${{ env.GITHUB_SHA }}

The tags key lists 2 tags and use the GITHUB_SHA environment variable. These tags will be pushed as the push key is set to true.

See:

• Github Actions - Default environment variables
• docker/build-push-action@v2 - customizing inputs