Github Runner with Private Repository as Dependency + SSH

[VladislavYakonyuk]

Hi, I'm having trouble working with GitHub private repositories in conjunction with yarn (c npm is exactly the same)

The stack is as follows: There is a github private repository which is a dependency for the main repository. A public ssh key was added to the dependency repository, which was generated on the server in deploy keys. In the github-runner, a private key was passed in secrets.

My package.json

"my-private-repo": "git+ssh://git@github.com:example/my-private-repo.git"

The secret key looks like this:

-----BEGIN RSA PRIVATE KEY-----
some key
-----END RSA PRIVATE KEY-----

The github-runner looks as follows:

      - name: build
        run: docker build -t frontend --build-arg SSH_KEY='${{{secrets.SSH_KEY}}' .

This is what the dockerfile looks like:

FROM node:16

ARG SSH_KEY

WORKDIR /app

COPY package.json /app/
COPY yarn.lock /app/

RUN mkdir -p -m 0600 ~/.ssh && ssh-keyscan github.com >> ~/.ssh/known_hosts

RUN yarn install # ssh-agent sh -c 'echo $SSH_KEY | base64 -d | ssh-add - ; yarn install'

This results in an error:

git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Can you tell me if I have made wrong steps somewhere?