Can't docker pull - connection refused

Question

I am running the following command from docker within an ubuntu virtualbox and getting a connection refused error.

I am behind a corporate proxy and have configured my environmental vairables to use the proxy and username and password. I also tried using a proxychain.

root@mbak1-VirtualBox:~# sudo proxychains docker pull busybox
ProxyChains-3.1 (http://proxychains.sf.net)
Using default tag: latest
Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp 54.152.209.167:443: getsockopt: connection refused

root@mbak1-VirtualBox:~# docker pull hello-world
Using default tag: latest
Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp 35.169.231.249:443: getsockopt: connection refused

My situation seems to be the exact same as the following:

https://github.com/moby/moby/issues/31510

Update

I tried adding my proxy config to the following file but it didn't work. Additionally the file did not exist: /etc/sysconfig/docker .

I also tried to access the actual URL but I am getting a JSON response saying unauthorized.

update2

I think the problem is my DNS config. In the virtual machine I am getting the following for the lookup:

mbak1@mbak1-VirtualBox:~$ nslookup registry-1.docker.io
Server:     127.0.0.1
Address:    127.0.0.1#53

Non-authoritative answer:
Name:   registry-1.docker.io
Address: 34.200.28.105
Name:   registry-1.docker.io
Address: 52.54.216.153
Name:   registry-1.docker.io
Address: 34.200.90.16
Name:   registry-1.docker.io
Address: 52.204.202.231
Name:   registry-1.docker.io
Address: 52.22.181.254
Name:   registry-1.docker.io
Address: 54.152.209.167
Name:   registry-1.docker.io
Address: 34.205.207.96
Name:   registry-1.docker.io
Address: 35.169.231.249

Answer 1

The answer to my question came from this post here: https://community.ubnt.com/t5/UNMS-Beta/Connection-Refused-Failed-to-pull-docker-images/m-p/2220235/highlight/true#M3960

I am reposting it:

I managed to find a solution by adding a proxy for docker. Thank you for your help.

Create a systemd drop-in directory for the docker service:

$ sudo mkdir -p /etc/systemd/system/docker.service.d

Create a file called /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY environment variable:

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/"

Or, if you are behind an HTTPS proxy server, create a file called /etc/systemd/system/docker.service.d/https-proxy.conf that adds the HTTPS_PROXY environment variable:

[Service]
Environment="HTTPS_PROXY=https://proxy.example.com:443/"

If you have internal Docker registries that you need to contact without proxying you can specify them via the NO_PROXY environment variable:

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/" "NO_PROXY=localhost,127.0.0.1,docker-registry.somecorporation.com"

Or, if you are behind an HTTPS proxy server:

[Service]
Environment="HTTPS_PROXY=https://proxy.example.com:443/" "NO_PROXY=localhost,127.0.0.1,docker registry.somecorporation.com"

Flush changes:

sudo systemctl daemon-reload

Restart Docker:

sudo systemctl restart docker

Verify that the configuration has been loaded:

systemctl show --property=Environment docker

Environment=HTTP_PROXY=http://proxy.example.com:80/

Or, if you are behind an HTTPS proxy server:

systemctl show --property=Environment docker

Environment=HTTPS_PROXY=https://proxy.example.com:443/