build wants full github path for build, lets give it a try

api/app.go

@@ -2,7 +2,7 @@ package api
 
 import (
 	"context"
-	. "drone-with-go/model"
+	. "github.com/josebarn/drone-with-go/model"
 	"github.com/go-chi/chi"
 	"github.com/go-chi/render"
 	"net/http"

main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	. "drone-with-go/api"
+	. "github.com/josebarn/drone-with-go/api"
 	"github.com/urfave/cli"
 	"log"
 	"os"