Fix environment variables with the same prefix being skipped unintentionally (#98)

If you have two env variables (for example ONE_VARIABLE and ONE_VARIABLE_NAME) ONE_VARIABLE_NAME has prefix ONE_VARIABLE and will be skipped.

Co-authored-by: Jakob <dev@schrej.net>

server/server.go

@@ -129,7 +129,7 @@ eloop:
 	for k := range s.Config().EnvVars {
 		// Don't allow any environment variables that we have already set above.
 		for _, e := range out {
-			if strings.HasPrefix(e, strings.ToUpper(k)) {
+			if strings.HasPrefix(e, strings.ToUpper(k) + "=") {
 				continue eloop
 			}
 		}