authenticate private vcs with specific user

Question

I'm using gitblit to self-host my git repositories. I added them to my composer file:

"repositories": [
    {
        "type": "vcs",
        "url": "ssh://[email protected]:29418/foo/repo.git"
    }
]

It works well except I'm asked for the password for every of those repos. I wonder how I authenticate. I see that I can enter username, password but not for git. I see that I can authenticate with keys but the user running the install/update command is www-data and not user who has rights to read the repositories.

How do I authenticate to this so I can run composer unattended?

Answer 1

You can tell composer what key to use for each repository.

From the doc :

{
  "repositories": [{
    "type": "composer",
    "url": "ssh2.sftp://example.org",
    "options": {
      "ssh2": {
        "username": "composer",
        "pubkey_file": "/home/composer/.ssh/id_rsa.pub",
        "privkey_file": "/home/composer/.ssh/id_rsa"
      }
    }
  }]
}