fix: fixed init

For some reason when building . instead of main.go,
the main_packr.go file was being ignored it seems.

Also changed it to run with go generate.

refs #591

.goreleaser.yml

@@ -1,6 +1,7 @@
 builds:
-  - hooks:
-      pre: packr
+  - main: ./main.go
+    hooks:
+      pre: go generate
     env:
       - CGO_ENABLED=0
     goos:

main.go

@@ -1,3 +1,4 @@
+//go:generate packr
 package main
 
 import (