diff --git a/cmd/docker-buildx/main.go b/cmd/docker-buildx/main.go
index c936baa..5531f44 100644
--- a/cmd/docker-buildx/main.go
+++ b/cmd/docker-buildx/main.go
@@ -19,6 +19,10 @@ func main() {
 	if _, err := os.Stat("/run/drone/env"); err == nil {
 		godotenv.Overload("/run/drone/env")
 	}
+	
+	if envFile, set := os.LookupEnv("PLUGIN_ENV_FILE"); set {
+		godotenv.Overload(envFile)
+	}
 
 	app := &cli.App{
 		Name:    "docker-buildx",
diff --git a/docs.md b/docs.md
index cc620c6..3275862 100644
--- a/docs.md
+++ b/docs.md
@@ -122,6 +122,7 @@ If it's not a tag event, and no default branch, automated tags are skipped.
 | `add_host`                | *none*            | sets additional host:ip mapping
 | `output`                  | *none*            | sets build output in format `type=<type>[,<key>=<value>]`
 | `logins`                  | *none*            | option to log into multiple registries
+| `env_file`                | *none*            | load env vars from specified file
 
 ## Multi registry push example