Go mod download private git registry.

[lichunqiang]

My project depends on a private Git registry. When using Goxx to cross-build, go mod download fails.

What's the best practice for this scenario?

[crazy-max]

I don't think this is relevant to goxx but your workflow as you would have the same issue when building with standard golang image but you can do smth similar to docker/build-push-action#1112 (comment) using a secret mount.

In your case:

RUN --mount=type=secret,id=GIT_AUTH_TOKEN \
  set -e
  GIT_AUTH_TOKEN=$(cat /run/secrets/GIT_AUTH_TOKEN)
  if [ -n "$GIT_AUTH_TOKEN" ]; then
    echo "Setting GitHub access token"
    git config --global "url.https://x-access-token:${GIT_AUTH_TOKEN}@github.com.insteadof" "https://github.com"
  fi
  go mod download -x
EOT