Docker on a linux VMware machine: error with apt-get and proxy

You may be in a corporate network I assume and you need to make two changes.

$ cat /etc/resolv.conf# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTENnameserver 10.X.Y.Zsearch myorg.org

You need to setup these in your docker daemon config. You can do this by creating a file /etc/docker/daemon.json with below content

{  "dns": ["10.X.Y.Z"],  "dns-search": ["myorg.org"]}

The actual values will depend on the output you got.

You also need to change the proxy settings and apply them in your docker service drop-in file. This can be done as listed in below thread

lookup registry-1.docker.io: no such host (Same as what VonC already pointed out)

Nodemailer with Docker

Adding ENV to your Dockerfile is not needed at build time: during a docker build, the only one needing a proxy is the docker daemon.

See "Control Docker with systemd", especially the section "HTTP/HTTPS proxy"

/etc/systemd/system/docker.service.d/http-proxy.confEnvironment="HTTP_PROXY=http://proxy.example.com:80/" "NO_PROXY=localhost,127.0.0.1,docker-registry.somecorporatio

Followed by:

$ sudo systemctl daemon-reload$ sudo systemctl restart dockerVerify that the configuration has been loaded:$ systemctl show --property=Environment dockerEnvironment=HTTP_PROXY=http://proxy.example.com:80/

This will be related to the dns server.

Try to sed the default dns server to another one, 114.114.114.114 for example:

sed -i 's/\(nameserver\) .*/\1 114.114.114.114/' /etc/resolv.conf