Which solution meets these requirements?
Change the buildspec by adding a post_build phase that uses the commands block to push the Docker image.
Change the buildspec by adding a post_build phase that uses the finally block to push the Docker image.
Specify the Docker image in the buildspec’s artifacts sequence with an action to push the image.
Use a batch build to define a build matrix. Use the batch build to push the Docker image.
Explanations:
Thepost_buildphase in thebuildspec.ymlfile is executed after the build phase. Using thecommandsblock inpost_build, you can specify the command to push the Docker image to Amazon ECR after a successful build. This meets the requirement of pushing the Docker image only after a successful build.
Thefinallyblock is used in AWS CodeBuild to define commands that run after all other phases, regardless of success or failure. This would not fulfill the requirement to push the image only after a successful build.
Artifacts in thebuildspec.ymlare typically used to define files to be stored and exported after the build. Pushing a Docker image is not handled via artifacts, so this option is not appropriate for pushing the image to Amazon ECR.
Batch builds in AWS CodeBuild allow you to define multiple build runs in parallel or sequentially. However, a batch build is not necessary for pushing a Docker image to Amazon ECR; thepost_buildphase in thebuildspec.ymlis the appropriate method.
If I had to guess, I’d say the answer is:
Change the buildspec by adding a post_build phase that uses the commands block to push the Docker image.