Merge pull request #17 from jay7x/deps

Bump deps to fix goproxy DoS vulnerability

Merge pull request #15 from jay7x/docker

Improve Dockerfile

Merge pull request #13 from jay7x/socks5

Implement SOCKS5 support

Update README with docker usage

Make better release archive names

Fix release workflow

Update workflows and disable CGO

CGO is disabled to simplify cross-compilation. This might be changed
later if required.