Create Dockerfile

[segator]

I created the lcvpn docker
to build & run

docker build  -t segator/lcvpn .
docker run -d --name lcvpn  -v /my/lcvpn.conf:/config/lcvpn.conf  -p 25001:25001/udp segator/lcvp

[kanocz]

@segator I have 2 questions :)

1. what's a reason to run VPN in docker? you're almost separated from global network and this lcvpn instance will be mostly limited to only docket container... I can image that it will has access to other docker containers and so on, but this will require little bit complicated configuration
2. why you're using 'alpine' as basic image + doing some magic with symbolic links (libc.musl-x86_64.so.1 to ld-linux-x86-64.so.2)? golang creates static binary which doesn't require any external library or file, so empty container with only lcvpn binary (and external volume with config which can direct to host filesystem) will be more then enough

[segator]

This is q common case when using alpine in go, i saw in a lot of docker go apps, in fact lcvpn doesnt work if dont set, why docker? Because is very easy to setup, if -net host then tun is created on the host so any app can use it

[kanocz]

@segator

1. you don't need alpine - just use FROM scratch :) it will work and resulting container will be many times smaller :) and I believe that it will work without any problems
2. ok then :) but please add instruction of usage to README or add something like docker-readme.txt where -net host is also there, so users who don't use docker on daily basis will not reports bugs as nothing works :)

[l0k18]

There is also a method for building an ultra-slim container for running Go applications, it involves starting first with a full build and then it rips out everything except what Go needs.

https://blog.codeship.com/building-minimal-docker-containers-for-go-applications/