restructure to build individual binaries

plugins/repo/src/commands/commands.go

@@ -33,10 +33,6 @@ func main() {
 		usage()
 	case "help":
 		fmt.Print(helpContent)
-	case "repo:gc":
-		gitGC()
-	case "repo:purge-cache":
-		purgeCache()
 	default:
 		dokkuNotImplementExitCode, err := strconv.Atoi(os.Getenv("DOKKU_NOT_IMPLEMENTED_EXIT"))
 		if err != nil {

plugins/repo/src/subcommands/gc/gc.go

@@ -8,7 +8,7 @@ import (
 )
 
 // runs 'git gc --aggressive' against the application's repo
-func gitGC() {
+func main() {
 	flag.Parse()
 	appName := flag.Arg(1)
 	if appName == "" {

plugins/repo/src/subcommands/purge-cache/purge-cache.go

@@ -9,7 +9,7 @@ import (
 )
 
 // deletes the contents of the build cache stored in the repository
-func purgeCache() {
+func main() {
 	flag.Parse()
 	appName := flag.Arg(1)
 	if appName == "" {