fix Dockerfile

Author: vintikzzz

Dockerfile

@@ -9,6 +9,7 @@ COPY . .
 
 # compile linux only
 ENV GOOS=linux
+ENV CGO_ENABLED=0
 
 # build the binary with debug information removed
 RUN go build -ldflags '-w -s' -a -installsuffix cgo -o server
@@ -24,7 +25,12 @@ COPY --from=build /app/server .
 # copy player
 COPY --from=build /app/player ./player
 
+ENV OUTPUT=/data
+
 # tell we are exposing our service
 EXPOSE 8080 8081 8082
 
-ENTRYPOINT ["./server"]
+ENTRYPOINT []
+
+# run it!
+CMD ["./server"]

services/common.go

@@ -18,9 +18,10 @@ const (
 
 func RegisterCommonFlags(f []cli.Flag) []cli.Flag {
 	return append(f, cli.StringFlag{
-		Name:  OutputFlag + ", o",
-		Usage: "output (local path)",
-		Value: "out",
+		Name:   OutputFlag + ", o",
+		Usage:  "output (local path)",
+		Value:  "out",
+		EnvVar: "OUTPUT",
 	})
 }