Consolidate Dockerfile into root and consolidate version into config (#1118)

* Consolidate Dockerfile into root and consolidate version into config

* Correct the build args here

main.go

@@ -4,7 +4,6 @@ import (
 	"flag"
 	"os"
 	"strconv"
-	"time"
 
 	"github.com/markbates/pkger"
 	"github.com/owncast/owncast/logging"
@@ -18,16 +17,6 @@ import (
 	"github.com/owncast/owncast/utils"
 )
 
-// the following are injected at build-time.
-var (
-	// GitCommit is the commit which this version of owncast is running.
-	GitCommit = ""
-	// BuildVersion is the version.
-	BuildVersion = config.StaticVersionNumber
-	// BuildPlatform is the type of build.
-	BuildPlatform = ""
-)
-
 func main() {
 
 	// Enable bundling of admin assets
@@ -46,16 +35,6 @@ func main() {
 
 	flag.Parse()
 
-	config.VersionNumber = BuildVersion
-	if GitCommit != "" {
-		config.GitCommit = GitCommit
-	} else {
-		config.GitCommit = time.Now().Format("20060102")
-	}
-	if BuildPlatform != "" {
-		config.BuildPlatform = BuildPlatform
-	}
-
 	if *logDirectory != "" {
 		config.LogDirectory = *logDirectory
 	}