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Rebuilding Buildstep Image For Dokku From Behind Proxy

I had to change the buildstep image’s docker file to add my proxy. This is because the buildstep image required a proxy before the build to download the python buildpack.

I was rebuilding the buildstep image for dokku with these instructions:

I’m behind a proxy, so I was getting this error when I ran “sudo make build”:

Cloning into ‘heroku-buildpack-multi’… fatal: unable to access ‘’: Failed to connect to port 443: Connection timed out

The solution? Replace the Dockerfile in the root of the folder you git cloned with this: