Heroku docker deployment

Question

I was following the this article https://devcenter.heroku.com/articles/container-registry-and-runtime and I'm stuck with "heroku container:push". I run "heroku container:push --app mediabox" and the docker image is properly build and then it start to push it to registry and this is what I get:

Successfully built 7926b98d51b5
The push refers to a repository [registry.heroku.com/mediabox/web]
38d48dd6de30: Preparing 
969058e6ddc9: Preparing 
2f454953e0e7: Preparing 
f67c1ecd32a1: Preparing 
44fade3982ca: Preparing 
0accb1c81980: Waiting 
e79bbdfaa0d3: Waiting 
1be5d1797b73: Waiting 
5c0a4f4b3a35: Waiting 
011b303988d2: Waiting 
error parsing HTTP 400 response body: unexpected end of JSON input: ""
 !    Error: docker push exited with 1

This is my Dockerfile:

FROM ruby:2.3.1-alpine

RUN apk --update --no-cache add build-base less libxml2-dev libxslt-dev nodejs postgresql-dev && mkdir -p /app

WORKDIR /app

COPY Gemfile Gemfile.lock ./

RUN gem install bundler

RUN bundle

COPY . ./

CMD ["script/docker-entrypoint.sh"]

I can't find the solution here. Thanks for your help.

Answer 1

I had this problem when I forgot to run heroku container:login. Even if you're logged in to heroku, heroku container service requires a separate login. That's why you're getting the error right at the beginning of the upload - you are not authorised.

Answer 2

I needed to explicitly pass the app name and not the internal one so doing heroku container:push --app rocky-wildwood-86034 went well.

I did: heroku container:push --app mediabox

the proper one was: heroku container:push --app rocky-wildwood-86034

Simple the app name should be the global heroku app name instead of the one which was defined in docker-compose.yml.