How to deploy a container on heroku?

Question

Python

I'm trying to use the official tutorial to deploy a container on heroku in a python application. But I get a 500 error in response. Please help me understand what I am doing wrong.
After I log in to heroku and create the application, I try to build the image and send it to the heroku registry like so:

[email protected] ~/.MINT17/code/python/alpinehelloworld $ heroku container:push web
=== Building web (/home/md/.MINT17/code/python/alpinehelloworld/Dockerfile)
Sending build context to Docker daemon 9.216 kB
Step 1 : FROM alpine:latest
 ---> 3080ff66650c
Step 2 : RUN apk add --no-cache --update python3 py3-pip bash
 ---> Using cache
 ---> e67647f532f4
Step 3 : ADD ./webapp/requirements.txt /tmp/requirements.txt
 ---> Using cache
 ---> 280b9fa100ca
Step 4 : RUN pip3 install --no-cache-dir -q -r /tmp/requirements.txt
 ---> Using cache
 ---> acbb31bb0e60
Step 5 : ADD ./webapp /opt/webapp/
 ---> Using cache
 ---> ea075cc9a5a8
Step 6 : WORKDIR /opt/webapp
 ---> Using cache
 ---> 6bef2d2233d4
Step 7 : RUN adduser -D myuser
 ---> Using cache
 ---> e2fd64e621d4
Step 8 : USER myuser
 ---> Using cache
 ---> 436f92d1a459
Step 9 : CMD gunicorn --bind 0.0.0.0:$PORT wsgi
 ---> Using cache
 ---> f4890fe49e14
Successfully built f4890fe49e14
=== Pushing web (/home/md/.MINT17/code/python/alpinehelloworld/Dockerfile)
The push refers to a repository [registry.heroku.com/peaceful-spire-48791/web] (len: 1)
f4890fe49e14: Image already exists 
e2fd64e621d4: Image already exists 
ea075cc9a5a8: Image already exists 
acbb31bb0e60: Image already exists 
280b9fa100ca: Image already exists 
e67647f532f4: Image already exists 
3c5b15d3e50c: Pushed 
latest: digest: sha256:60d8e7b3461ad98b443581a822afe544efbf43c557656ac77d86a46616a1eb77 size: 14616
Received unexpected HTTP status: 500 Internal Server Error
 ▸    Error: docker push exited with Error: 1

or like this:

heroku container:release web --app peaceful-spire-48791

But in both cases I get a server error with code 500

Answer 1

heroku logs -t