diff --git a/docker/Dockerfile-frontend b/docker/Dockerfile-frontend
index 6235770..749fe9f 100644
--- a/docker/Dockerfile-frontend
+++ b/docker/Dockerfile-frontend
@@ -2,4 +2,5 @@
 FROM docker.io/nginx:stable-alpine
 COPY --chown=nginx:nginx frontend/dist/apps/web/ /var/www/abrechnung/
 COPY --chown=nginx:nginx frontend/apps/web/src/assets/config.json /var/www/abrechnung/config.json
-COPY docker/nginx-static /etc/nginx/conf.d/default.conf
\ No newline at end of file
+COPY docker/nginx-static /etc/nginx/conf.d/default.conf
+COPY --chmod=0755 docker/entrypoint-frontend.sh /docker-entrypoint.d/99-abrechnung.sh
diff --git a/docker/entrypoint-frontend.sh b/docker/entrypoint-frontend.sh
new file mode 100644
index 0000000..c37563f
--- /dev/null
+++ b/docker/entrypoint-frontend.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+CONF="/etc/nginx/conf.d/default.conf"
+
+[[ ! -z "${ABRECHNUNG_API__HOST}" ]] && sed -i "s/api:/${ABRECHNUNG_API__HOST}:/g" "$CONF"
+[[ ! -z "${ABRECHNUNG_API__PORT}" ]] && sed -i "s/:8080/:${ABRECHNUNG_API__PORT}/g" "$CONF"
+[[ ! -f "/proc/net/if_inet6" ]] && sed -i "s/listen \[::\]/#listen \[::\]/g" "$CONF"