diff --git a/Dockerfile b/Dockerfile
index 97e7ca0..c38e0f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,4 +12,7 @@ COPY /data/loaded_plugins /opt/emqx/data/
 
 EXPOSE 1883 8083 8084 8883 11883 18083 4370 5369
 
-ENTRYPOINT ["sh", "/opt/emqx/bin/emqx", "foreground"]
\ No newline at end of file
+COPY ./entrypoint.sh /opt/emqx/bin/entrypoint.sh
+USER root
+RUN chmod +x /opt/emqx/bin/entrypoint.sh
+ENTRYPOINT ["/opt/emqx/bin/entrypoint.sh"]
diff --git a/configs/emqx_exhook.conf b/configs/emqx_exhook.conf
index 2804d78..405283c 100644
--- a/configs/emqx_exhook.conf
+++ b/configs/emqx_exhook.conf
@@ -48,7 +48,7 @@
 ## The gRPC server url
 ##
 ## exhook.server.$name.url = url()
-exhook.server.default.url = http://switch-gear:9000
+exhook.server.default.url = http://${SG_HOSTNAME}:9000
 
 #exhook.server.default.ssl.cacertfile = etc/certs/cacert.pem
 #exhook.server.default.ssl.certfile = etc/certs/cert.pem
diff --git a/docker-compose.yml b/docker-compose.yml
index 0b11352..864e94e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,9 +18,9 @@ services:
       - ./static:/opt/emqx/static
       - ./configs:/opt/emqx/configs
 
-#    environment:
+    environment:
       # Hostname configurations
-#      - MGT_HOSTNAME=localhost
+      - SG_HOSTNAME=switchgear
 #      - MGT_HTTPS_PORT=9443
 #      - MGT_HTTP_PORT=9763
 #
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..18f53c6
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+CONFIG_PATH=/opt/emqx/etc/plugins/emqx_exhook.conf
+
+# Set emqx_exhook.conf configs
+sed -i 's/${SG_HOSTNAME}/'$SG_HOSTNAME'/g' $CONFIG_PATH
+
+echo "Starting server.."
+sh /opt/emqx/bin/emqx foreground