diff --git a/CHANGELOG.md b/CHANGELOG.md
index c27fb6f..2472de1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.65.1-RC2 (2020/07/10)
+
+* Add `LIBRENMS_BASE_URL` env var (#95 #99 #100)
+
 ## 1.65.1-RC1 (2020/07/10)
 
 * LibreNMS 1.65.1
diff --git a/doc/docker/environment-variables.md b/doc/docker/environment-variables.md
index 322675a..caa3fe2 100644
--- a/doc/docker/environment-variables.md
+++ b/doc/docker/environment-variables.md
@@ -41,6 +41,7 @@
 
 ### Misc
 
+* `LIBRENMS_BASE_URL`: URL of your LibreNMS instance (default `/`)
 * `LIBRENMS_SNMP_COMMUNITY`: This container's SNMP v2c community string (default `librenmsdocker`)
 * `LIBRENMS_WEATHERMAP`: Enable LibreNMS [Weathermap plugin](https://docs.librenms.org/Extensions/Weathermap/) (default `false`)
 * `LIBRENMS_WEATHERMAP_SCHEDULE`: CRON expression format (default `*/5 * * * *`)
diff --git a/rootfs/etc/cont-init.d/03-config.sh b/rootfs/etc/cont-init.d/03-config.sh
index 98c1be4..67d2d97 100644
--- a/rootfs/etc/cont-init.d/03-config.sh
+++ b/rootfs/etc/cont-init.d/03-config.sh
@@ -41,6 +41,8 @@ DB_NAME=${DB_NAME:-librenms}
 DB_USER=${DB_USER:-librenms}
 DB_TIMEOUT=${DB_TIMEOUT:-30}
 
+LIBRENMS_BASE_URL=${LIBRENMS_BASE_URL:-/}
+
 # Timezone
 echo "Setting timezone to ${TZ}..."
 ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime
@@ -88,7 +90,7 @@ rm -f ${LIBRENMS_PATH}/config.d/*
 
 echo "Setting LibreNMS configuration..."
 
-# Env : Database
+# Env file
 if [ -z "$DB_HOST" ]; then
   >&2 echo "ERROR: DB_HOST must be defined"
   exit 1
@@ -99,6 +101,7 @@ if [ -z "$DB_PASSWORD" ]; then
   exit 1
 fi
 cat > ${LIBRENMS_PATH}/.env <<EOL
+APP_URL=${LIBRENMS_BASE_URL}
 DB_HOST=${DB_HOST}
 DB_PORT=${DB_PORT}
 DB_DATABASE=${DB_NAME}
@@ -115,6 +118,13 @@ EOL
 EOL
 ln -sf /data/logs ${LIBRENMS_PATH}/logs
 
+# Config : Server
+  cat > ${LIBRENMS_PATH}/config.d/server.php <<EOL
+<?php
+\$config['own_hostname'] = '$(hostname)';
+\$config['base_url'] = '${LIBRENMS_BASE_URL}';
+EOL
+
 # Config : User
 cat > ${LIBRENMS_PATH}/config.d/user.php <<EOL
 <?php