MJML compiler in TCP mode failing in CI on bitbucket

I’m having some issues getting our CI builds to pass using MJML-django in TCP mode as the renderer. It was working and then quite consistently when we started rendering more emails they started failing:

RuntimeError: MJML compile error (via MJML TCP server): no working server
Number of servers: 1
Timeouts: 0

I’m a bit baffled by the error. It appears that there are working servers but the compilation step is failing immediately.

Bitbucket YAML looks as follows for docker config:

image: python:3.6-jessie

definitions:
  services:
    mysql:
      image: mysql:5.7
      environment:
        MYSQL_DATABASE: pipelines
        MYSQL_ROOT_PASSWORD: *********
    redis:
      image: redis
    mjml:
      image: liminspace/mjml-tcpserver:0.10.2
      environment:
        HOST: "0.0.0.0"
        PORT: "28102"
      expose:
          - "28102"
      ports:
          - "28102:28102"

[bramski]

Had a chance to investigate this further. There seem to be some bugs in bitbucket’s docker work. I changed to port 28101 and then updated the definition for the MJML docker container to be much more plain:

    mjml:
      image: liminspace/mjml-tcpserver:0.10.2

That managed to make the ports work correctly. Not sure why “expose” and “ports” were causing this to fail so randomly.

[bramski]

Please leave it open I will be able to deal with this after holidays thanks.

On Fri., Jan. 1, 2021, 10:41 a.m. Igor Melnyk, [e-mail] wrote:

provide all info to reproduce the issue locally and after that I’ll try to fix that. currently I don’t see any problem neither python library nor docker image. they are working on various projects quite stable and well (including gitlab-ci to run functional and unit tests)

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