Docker in ctrlX App Build Environment

[pwaszkewitz]

Is it possible to run a docker inside a ctrlX App Build Environment?

I could install the docker runtime without problems (so proxy is obviously working), but "docker run" as well as "docker pull" either run into a permission error or - with "sudo" - in "lookup registry-1.docker.io on 127.0.0.53:53: no such host".

Entering in /etc/systemd/system/docker.service.d/10_docker_proxy.conf or http_proxy.conf

[Service]

HTTPS_PROXY=http://10.0.2.2:3128

HTTP_PROXY=http://10.0.2.2:3128

as suggested on StackOverflow had no effect.

[Sgilk · Accepted solution]

@pwaszkewitz ,

Yes, it is.

Are you behind a proxy? Disconnecting from corporate VPN should allow you to pull the image.

There is a key note in the Docker documentation that is not made very clear...

If you're behind an HTTP or HTTPS proxy server, for example in corporate settings, the daemon proxy configurations must be specified in the systemd service file, not in the daemon.json file or using environment variables.

To configure Docker behind a proxy, follow these instructions.