Unable to use packages in private repositories

[bbrks]

Not sure if this is possible, feasible, or even out of scope, as my project does not strictly follow the sample hierarchy... But I'm trying to build docker images for a bunch of microservices. All of these microservices share a single authentication middleware function.

All of these services are stored in separate private repositories. When I try using golang-builder, I get 403s from the imported private repos for obvious reasons.

$ docker run --rm -v "$(pwd):/src" -v /var/run/docker.sock:/var/run/docker.sock centurylink/golang-builder
# cd .; git ls-remote https://bitbucket.org/xxx/auth
fatal: could not read Username for 'https://bitbucket.org': No such device or address
# cd .; hg identify https://bitbucket.org/xxx/auth
abort: HTTP Error 404: Not Found
package bitbucket.org/xxx/auth/middleware: https://api.bitbucket.org/1.0/repositories/xxx/auth: 403 FORBIDDEN

Is it possible to either;
a) use git/ssh credentials in build image
b) copy third-party imports from the $GOPATH/src directory at the same time as $(pwd), and use them in the build, then run a "go get" for any missing public imports.

I have found a workaround, by locally cross-compiling to linux, then running docker build myself, but this does have drawbacks... The person doing the build needs Go installed to compile stuff. Using golang-builder, anybody with Docker can run the build.

GOOS="linux" go build
docker build -t yyyservice
docker-compose up