diff --git a/Dockerfile b/Dockerfile
index 88635c0..cabdb79 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,3 @@ ENV GITEA__database__PASSWD=${DATABASE_PASSWORD}
 ENV GITEA_CUSTOM=/var/lib/gitea/custom
 
 COPY app.ini /var/lib/gitea/custom/conf/app.ini
-
-RUN sed -i "s/HTTP_PORT\s*=\s*3000/HTTP_PORT = $PORT/" /var/lib/gitea/custom/conf/app.ini
-RUN sed -i "s#ROOT_URL\s*=\s*http://localhost/#ROOT_URL = http://localhost:$PORT/#" /var/lib/gitea/custom/conf/app.ini
-
diff --git a/app.ini b/app.ini
index 9b3392e..1d0d6fe 100644
--- a/app.ini
+++ b/app.ini
@@ -8,8 +8,7 @@ SSL_MODE = disable
 
 [server]
 DOMAIN       = localhost
-HTTP_PORT    = 3000
-ROOT_URL     = http://localhost:3000/
+HTTP_PORT    = $PORT
 SSH_PORT     = 2222
 
 [repository]