diff --git a/backend/src/main.rs b/backend/src/main.rs
index b68619f..d9db139 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -4,7 +4,10 @@ extern crate actix_web;
 extern crate lazy_static;
 #[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate structopt;
 
+mod config;
 mod data;
 mod error;
 mod service;
@@ -14,7 +17,7 @@ use crate::{
     data::FilePath,
     error::Result,
     service::{Bitbucket, GitLab, Github, Service},
-    statics::FAVICON,
+    statics::{FAVICON, OPT},
 };
 use actix_web::{
     http::header::{self, CacheControl, CacheDirective},
@@ -113,6 +116,7 @@ fn main() -> Result<()> {
                 web::get().to_async(handle_request::<GitLab>),
             )
     })
-    .bind("0.0.0.0:8080")?
+    .workers(OPT.workers)
+    .bind((OPT.interface, OPT.port))?
     .run()?)
 }
diff --git a/backend/src/service.rs b/backend/src/service.rs
index 08ce369..d6018fd 100644
--- a/backend/src/service.rs
+++ b/backend/src/service.rs
@@ -1,4 +1,7 @@
-use crate::data::FilePath;
+use crate::{
+    data::FilePath,
+    statics::{GITHUB_AUTH_QUERY, OPT},
+};
 use actix_web::{
     http::{header::LOCATION, StatusCode},
     web, Error, HttpResponse,
@@ -105,13 +108,17 @@ pub(crate) trait Service {
 pub(crate) struct Github;
 
 impl Github {
-    fn auth_query() -> Option<String> {
+    pub(crate) fn auth_query() -> Option<String> {
         use std::env::var;
-        var("GITHUB_CLIENT_ID").ok().and_then(|id| {
-            var("GITHUB_CLIENT_SECRET")
-                .ok()
-                .map(|secret| format!("?client_id={}&client_secret={}", id, secret))
-        })
+        OPT.github_id
+            .clone()
+            .or_else(|| var("GITHUB_CLIENT_ID").ok())
+            .and_then(|id| {
+                OPT.github_secret
+                    .clone()
+                    .or_else(|| var("GITHUB_CLIENT_SECRET").ok())
+                    .map(|secret| format!("?client_id={}&client_secret={}", id, secret))
+            })
     }
 }
 
@@ -131,7 +138,7 @@ impl Service for Github {
             path.user,
             path.repo,
             path.commit,
-            Self::auth_query().unwrap_or_default()
+            GITHUB_AUTH_QUERY.as_str()
         )
     }
 
diff --git a/backend/src/statics.rs b/backend/src/statics.rs
index cd3fcb5..0729595 100644
--- a/backend/src/statics.rs
+++ b/backend/src/statics.rs
@@ -1,5 +1,10 @@
+use crate::{config::Opt, service::Github};
+use structopt::StructOpt;
+
 const VERSION: &str = env!("CARGO_PKG_VERSION");
 pub(crate) const FAVICON: &[u8] = include_bytes!("../static/favicon32.png");
 lazy_static! {
     pub(crate) static ref USER_AGENT: String = format!("gitache/{}", VERSION);
+    pub(crate) static ref OPT: Opt = Opt::from_args();
+    pub(crate) static ref GITHUB_AUTH_QUERY: String = Github::auth_query().unwrap_or_default();
 }