error: Couldn't find a repository matching this job. for coverage output sent from within docker container run on Travis-CI

[tecfu]

Problem:

When attempting to send coverage output to coveralls.io from within a docker container running on travis-CI:

$ npx nyc report --reporter=text-lcov | npx coveralls

I get the following error output:

Bad response: 422 {"message":"Couldn't find a repository matching this job.","error":true}

Environment:

continuous integration server: travis-ci
os: linux
dist: trusty

Details:

• Coverage output originates from an open source nodejs terminal table project on Github
• The project relies on docker during integration runs, because docker enables testing of Linux distributions (Centos) that aren't available for CI out-of-the-box
• Running from within docker seems to the cause of the issue

Workaround:

Coverage output is uploaded correctly when token is added via .coveralls.yml

I'd prefer not to use the token in an open source project, but this seems the only way. Unless I can export the CI environment information into the docker container, such that the upload script can detect the CI environment.

Questions:

• What does the coverage upload script do to discover information that indicates it is being run from within an CI service?
• How can I export that information into the scope of the docker container (travis-ci, circle-ci), so that I don't have to use a token?

[tecfu]

Dockerfile content:

FROM ubuntu:18.04

# Because there is no package cache in the image, you need to run:
RUN apt update

# Install nodejs
RUN apt install curl gnupg -y
RUN curl -sL https://deb.nodesource.com/setup_11.x | bash -
RUN apt update
RUN apt install -y nodejs

# Install tty-table
RUN apt install git -y
RUN git clone https://www.github.com/tecfu/tty-table

# Install dev dependencies
WORKDIR /tty-table
RUN npm install

# Run unit tests & report coverage
RUN node -v
# RUN npx mocha
RUN npm run coverage
# RUN npm run npx nyc report --reporter=text-lcov > coverage.lcov && npx codecov -t $myToken
RUN npx nyc report --reporter=text-lcov | npx coveralls