diff --git a/README.md b/README.md
index 1c05a60..ce887da 100644
--- a/README.md
+++ b/README.md
@@ -52,11 +52,18 @@ curl -L https://github.com/getumbrel/umbrel/archive/v0.3.5.tar.gz | tar -xz --st
 # To use Umbrel on mainnet, run:
 sudo ./scripts/start
 
+# The following environment settings can only be set
+# during first run of the start script and will be persisted through
+# any updates
+
 # For testnet, run:
 sudo NETWORK=testnet ./scripts/start
 
 # For regtest, run:
 sudo NETWORK=regtest ./scripts/start
+
+# For umbrel to listen on port 12345 instead of 80, run:
+sudo NGINX_PORT=12345 ./scripts/start
 ```
 
 To stop Umbrel, run:
diff --git a/docker-compose.yml b/docker-compose.yml
index fd2cb46..6948f77 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -30,7 +30,7 @@ services:
                 restart: on-failure
                 stop_grace_period: 30s
                 ports:
-                    - "80:80"
+                    - "${NGINX_PORT}:80"
                 networks:
                     default:
                         ipv4_address: $NGINX_IP
diff --git a/scripts/configure b/scripts/configure
index aca0bec..505f7a4 100755
--- a/scripts/configure
+++ b/scripts/configure
@@ -105,6 +105,7 @@ ENV_FILE="./templates/.env"
 NETWORK_IP="10.21.21.0"
 GATEWAY_IP="10.21.21.1"
 NGINX_IP="10.21.21.2"
+NGINX_PORT="${NGINX_PORT:-80}"
 DASHBOARD_IP="10.21.21.3"
 MANAGER_IP="10.21.21.4"
 MIDDLEWARE_IP="10.21.21.5"
@@ -267,6 +268,7 @@ for template in "${NGINX_CONF_FILE}" "${BITCOIN_CONF_FILE}" "${LND_CONF_FILE}" "
   sed -i "s/<network-ip>/${NETWORK_IP}/g" "${template}"
   sed -i "s/<gateway-ip>/${GATEWAY_IP}/g" "${template}"
   sed -i "s/<nginx-ip>/${NGINX_IP}/g" "${template}"
+  sed -i "s/<nginx-port>/${NGINX_PORT}/g" "${template}"
   sed -i "s/<dashboard-ip>/${DASHBOARD_IP}/g" "${template}"
   sed -i "s/<manager-ip>/${MANAGER_IP}/g" "${template}"
   sed -i "s/<middleware-ip>/${MIDDLEWARE_IP}/g" "${template}"
diff --git a/scripts/start b/scripts/start
index b68ef40..6b52418 100755
--- a/scripts/start
+++ b/scripts/start
@@ -38,7 +38,7 @@ fi
 
 # Configure Umbrel if it isn't already configured
 if [[ ! -f "${UMBREL_ROOT}/statuses/configured" ]]; then
-  NETWORK="${NETWORK:-mainnet}" "${UMBREL_ROOT}/scripts/configure"
+  NGINX_PORT=${NGINX_PORT:-80} NETWORK="${NETWORK:-mainnet}" "${UMBREL_ROOT}/scripts/configure"
 fi
 
 echo
diff --git a/templates/.env-sample b/templates/.env-sample
index 63c34f1..22514c7 100644
--- a/templates/.env-sample
+++ b/templates/.env-sample
@@ -2,6 +2,7 @@
 NETWORK_IP=<network-ip>
 GATEWAY_IP=<gateway-ip>
 NGINX_IP=<nginx-ip>
+NGINX_PORT=<nginx-port>
 DASHBOARD_IP=<dashboard-ip>
 MANAGER_IP=<manager-ip>
 MIDDLEWARE_IP=<middleware-ip>