Dns problem with version 1.0 rc3 and docker

[c-atarella]

Hi,

in my test installation of version 1.0 rc3 cloning etc. does not work because the gogs host address (or any other public hostname) cannot be resolved. The problem looks very similar to the one described in this topic:

Couldn't resolve host on clone

If you are new to this thread … I would recommend that everyone start by testing user-defined networks on their host machine. You can do so with the following command: docker network create foo docker run --network=foo -t -i alpine ping -c 1 github.com If the above command fails, it should help you narrow down the problem because we can rule out any issues with drone. You can then focus your time debugging host machine network configuration (iptables, etc) and your docker daemon configuration…

But the advised test to rule out docker configuration issues with a new network does work, e.g.

docker network create foo
docker run --network=foo -t -i alpine ping -c 1 github.com

succeeds.

For testing I disabled the default clone step and added a custom version in the .drone.yml. Replacing /etc/resolv.conf with one targeting the dns server in the local net has no effect, but adding the hostname to /etc/hosts works and makes git clone succeed.

Is it possible to replace the docker network created by the drone server with an existing one like foo from the example before? Or any other hints how to resolve this issue? With my old drone-0.4 installation address resolution works without any problems…

Thanks