goaci is a simple command-line tool to build go projects into ACIs which confirm to the app container specification.
Use goaci as you would go get:
$ goaci github.com/coreos/etcd
Wrote etcd.aci
$ actool -debug validate etcd.aci
etcd.aci: valid app container image
goaci provides options for specifying assets, adding arguments for an application, selecting binary is going to be packaged in final ACI and so on. Use --help to read about them.
goaci creates a temporary directory and uses it as a GOPATH (unless it is overridden with --go-path option); it then go gets the specified package and compiles it statically.
Then it generates an image manifest (using mostly default values) and leverages the appc/spec libraries to construct an ACI.
Lots, check out https://github.com/appc/goaci/issues