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Docker - what use is it? (sh.itjust.works)

submitted 2 years ago by Amongussussyballs100@sh.itjust.works to c/selfhosted@lemmy.world

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I see Docker mentioned every other thread and was wondering how useful it is for non development things, and if so what they are.

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[–] Amongussussyballs100@sh.itjust.works 3 points 2 years ago (2 children)

This looks like an interesting project. Can the vpn container only route traffic that are in other containers, or can regular applications get their traffic routed by the vpn container too?

[–] JoeCoT@fedia.io 3 points 2 years ago

I don't know of a good way to route other application's traffic through the VPN container with them being in docker containers, unless you use some intermediary setup. That's why I have socks proxies routed through the VPN, so I can selectively put traffic through it. If the app supports a socks proxy you could do it that way. At the least you could use Proxychains to do so if the program does TCP networking.

[–] clmbmb@lemmy.dbzer0.com 1 points 2 years ago* (last edited 2 years ago)

The answer is yes in both cases.

Docker has an internal networking setup. You can create a "network" and all containers in that network communicate with each other, but not with other containers in other networks. So you can set up a VPN container in a network and all containers in that netowrk could use the VPN to route their traffic through.
You can configure your VPN container to expose some ports that it uses to communicate, and then the "regular applications" can make use of those ports to connect through the VPN.