.PHONY: test release clean login logout publish

export APP_VERSION ?= $(shell git rev-parse --short HEAD)

version:
  @ echo '{"Version": "$(APP_VERSION)"}'

...
...

release:
    docker-compose up --abort-on-container-exit migrate
    docker-compose run app python3 manage.py collectstatic --no-input
    docker-compose up --abort-on-container-exit acceptance
    @ echo App running at http://$$(docker-compose port app 8000 | sed s/0.0.0.0/localhost/g)

publish:
    docker-compose push release app
clean:
    docker-compose down -v
    docker images -q -f dangling=true -f label=application=todobackend | xargs -I ARGS docker rmi -f ARGS

With this configuration in place, your Docker image will now be tagged with both the commit hash and latest tags, which you can then publish to ECR by simply running the make publish command.

Let's now commit your changes and run the full Make workflow to test, build, and publish your Docker images, as demonstrated in the following example. Notice that an image tagged with the commit hash of 97e4abf is published to ECR:

> git commit -a -m "Add publish tasks"
[master 97e4abf] Add publish tasks
 2 files changed, 12 insertions(+), 1 deletion(-)

> make login
$(aws ecr get-login --no-include-email)
Login Succeeded

> make test && make release
docker-compose build --pull release
Building release
...
...
todobackend_db_1 is up-to-date
Creating todobackend_app_1 ... done
App running at http://localhost:32774
$ make publish
docker-compose push release app
Pushing release (385605022855.dkr.ecr.us-east-1.amazonaws.com/docker-in-aws/todobackend:latest)...
The push refers to repository [385605022855.dkr.ecr.us-east-1.amazonaws.com/docker-in-aws/todobackend]
53ca7006d9e4: Layer already exists
ca208f4ebc53: Layer already exists
1702a4329d94: Layer already exists
e2aca0d7f367: Layer already exists
c3e0af9081a5: Layer already exists
20ae2e176794: Layer already exists
cd7100a72410: Layer already exists
latest: digest: sha256:d64e1771440208bde0cabe454f213d682a6ad31e38f14f9ad792fabc51008888 size: 1787
Pushing app (385605022855.dkr.ecr.us-east-1.amazonaws.com/docker-in-aws/todobackend:97e4abf)...
The push refers to repository [385605022855.dkr.ecr.us-east-1.amazonaws.com/docker-in-aws/todobackend]
53ca7006d9e4: Layer already exists
ca208f4ebc53: Layer already exists
1702a4329d94: Layer already exists
e2aca0d7f367: Layer already exists
c3e0af9081a5: Layer already exists
20ae2e176794: Layer already exists
cd7100a72410: Layer already exists
97e4abf: digest: sha256:d64e1771440208bde0cabe454f213d682a6ad31e38f14f9ad792fabc51008888 size: 1787

> make clean
docker-compose down -v
Stopping todobackend_app_1 ... done
Stopping todobackend_db_1 ... done
...
...

> make logout
docker logout https://385605022855.dkr.ecr.us-east-1.amazonaws.com
Removing login credentials for 385605022855.dkr.ecr.us-east-1.amazonaws.com