diff --git a/Dockerfile b/Dockerfile
index 2e0bf65..5b05833 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ COPY parse_db_url.sh /usr/local/bin/parse_db_url.sh
 USER root
 RUN chmod 755 /usr/local/bin/parse_db_url.sh
 
+ENV DATABASE_URL=${DATABASE_URL}
 
-RUN /usr/local/bin/parse_db_url.sh
+CMD ["/usr/local/bin/parse_db_url.sh"]
 
diff --git a/heroku.yml b/heroku.yml
index 4f05cbe..a37457c 100644
--- a/heroku.yml
+++ b/heroku.yml
@@ -16,6 +16,3 @@ build:
     GITEA__database__NAME: gitea
     GITEA__database__USER: gitea
     GITEA__database__PASSWD: gitea
-
-run:
-  web: /usr/local/bin/gitea web -port $PORT
diff --git a/parse_db_url.sh b/parse_db_url.sh
index e263799..6e5f588 100644
--- a/parse_db_url.sh
+++ b/parse_db_url.sh
@@ -6,3 +6,4 @@ export GITEA__database__PASSWD=$(echo ${DATABASE_URL} | sed -r "s|.*://[^:]+:([^
 export GITEA__database__HOST=$(echo ${DATABASE_URL} | sed -r "s|.*@([^:]+):.*|\1|")
 export GITEA__database__NAME=$(echo ${DATABASE_URL} | sed -r "s|.*:([0-9]+)/([^?]+).*|\2|")
 
+/usr/local/bin/gitea web -port $PORT