diff --git a/Dockerfile b/Dockerfile
index 8f0001030f20d8375b5e18aed795b504171ca631..bd495f07277626c24c0675d39c045601999a6fa2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,8 @@ USER root
 RUN apt-get update -y
 RUN apt-get install -y git libpq-dev gcc
 
+# Environment variables
+ARG DB_HOST=$DB_HOST
 
 # Set working directory
 WORKDIR /usr/src/app