diff --git a/Dockerfile b/Dockerfile
index c25c535..a65f24a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,12 +2,17 @@ FROM gitea/gitea:1.14.5-rootless
 
 ENV GITEA_CUSTOM=/var/lib/gitea/custom
 
-COPY app.ini /var/lib/gitea/custom/conf/app.ini
+# Copy the existing app.ini file to a temporary location
+COPY app.ini /tmp/app.ini
 
+# Extract the necessary parts from DATABASE_URL and modify the app.ini file in /tmp
 RUN DATABASE_USER=$(echo $DATABASE_URL | cut -d ':' -f 2 | cut -d '/' -f 3) \
     && DATABASE_PASSWORD=$(echo $DATABASE_URL | cut -d ':' -f 3 | cut -d '@' -f 1) \
     && DATABASE_HOST=$(echo $DATABASE_URL | cut -d '@' -f 2 | cut -d ':' -f 1) \
     && DATABASE_PORT=$(echo $DATABASE_URL | cut -d ':' -f 4 | cut -d '/' -f 1) \
     && DATABASE_NAME=$(echo $DATABASE_URL | cut -d '/' -f 4) \
-    && printf "[database]\nDB_TYPE  = postgres\nHOST     = $DATABASE_HOST\nNAME     = $DATABASE_NAME\nUSER     = $DATABASE_USER\nPASSWD   = $DATABASE_PASSWORD\nSSL_MODE = require\n" > /var/lib/gitea/custom/conf/app.ini
+    && printf "[database]\nDB_TYPE  = postgres\nHOST     = $DATABASE_HOST\nNAME     = $DATABASE_NAME\nUSER     = $DATABASE_USER\nPASSWD   = $DATABASE_PASSWORD\nSSL_MODE = require\n" > /tmp/app.ini
+
+# Move the modified app.ini to the Gitea configuration directory
+RUN mv /tmp/app.ini /var/lib/gitea/custom/conf/app.ini