Docker-DCO-1.1-Signed-off-by: Ryan Thomas <rthomas@atlassian.com> (github: rthomas)
Docker-DCO-1.1-Signed-off-by: Ryan Thomas <rthomas@atlassian.com> (github: rthomas)
Merge pull request #4836 from atlassian/master

Use environmental proxy when doing a ping to the remote repo