WIP: Replace job execution with runner delegation

Server now accepts runner connections via websockets. Jobs
will be delegated to these runners. This is currently a WIP,
as it is still hardcoded to use the first available runner.

go.mod

@@ -4,25 +4,13 @@ go 1.19
 
 require (
 	git.ohea.xyz/golang/config v0.0.0-20220915224621-b9debd233173
-	github.com/docker/docker v20.10.18+incompatible
 	github.com/op/go-logging v0.0.0-20160315200505-970db520ece7
+	nhooyr.io/websocket v1.8.7
 )
 
 require (
-	github.com/Microsoft/go-winio v0.5.2 // indirect
-	github.com/docker/distribution v2.8.1+incompatible // indirect
-	github.com/docker/go-connections v0.4.0 // indirect
-	github.com/docker/go-units v0.5.0 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/moby/term v0.0.0-20220808134915-39b0c02b01ae // indirect
-	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/opencontainers/image-spec v1.0.2 // indirect
+	github.com/gobwas/ws v1.1.0 // indirect
+	github.com/klauspost/compress v1.10.3 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/sirupsen/logrus v1.9.0 // indirect
-	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
-	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
-	golang.org/x/time v0.0.0-20220722155302-e5dcc9cfc0b9 // indirect
-	gotest.tools/v3 v3.3.0 // indirect
+	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 // indirect
 )