feat!: drop support for storing JWK on the filesystem (#1088)

backend/cmd/main.go

@@ -1,9 +1,12 @@
 package main
 
 import (
+	"fmt"
+	"os"
 	_ "time/tzdata"
 
 	"github.com/pocket-id/pocket-id/backend/internal/cmds"
+	"github.com/pocket-id/pocket-id/backend/internal/common"
 )
 
 // @title Pocket ID API
@@ -11,5 +14,9 @@ import (
 // @description.markdown
 
 func main() {
+	if err := common.ValidateEnvConfig(&common.EnvConfig); err != nil {
+		fmt.Fprintf(os.Stderr, "config error: %v\n", err)
+		os.Exit(1)
+	}
 	cmds.Execute()
 }