bind docker container to internal port if using vhosts

plugins/nginx-vhosts/bind-external-ip

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+APP="$1"
+
+set +e; NO_VHOST=$(dokku config:get $APP NO_VHOST); set -e
+if [[ -f "$DOKKU_ROOT/VHOST" ]];then
+  GLOBAL_VHOST=$(< "$DOKKU_ROOT/VHOST")
+else
+  GLOBAL_VHOST=$(< "$DOKKU_ROOT/HOSTNAME")
+fi
+
+if [[ -n "$NO_VHOST" ]]; then
+  echo true # bind to external ip. VHOST is disabled for this app
+elif [[ "$GLOBAL_VHOST" =~ ([0-9]{1,3}[\.]){3}[0-9]{1,3} ]];then
+  echo true # bind to external ip. GLOBAL_VHOST is somehow an IP
+elif [[ -f "$DOKKU_ROOT/$APP/VHOST" ]]; then
+  echo false # bind to docker ip. this app has a vhost defined
+else
+  echo false
+fi

plugins/nginx-vhosts/commands

@@ -15,7 +15,7 @@ restart_nginx () {
 
 case "$1" in
   nginx:build-config)
-    APP="$2"; PORT="$3"
+    APP="$2"; PORT="$3"; IP="${4:-127.0.0.1}"
     [[ -z "$PORT" ]] && PORT=$(< "$DOKKU_ROOT/$APP/PORT")
     VHOST_PATH="$DOKKU_ROOT/$APP/VHOST"
     WILDCARD_SSL="$DOKKU_ROOT/tls"
@@ -68,7 +68,7 @@ EOF
       NOSSL_SERVER_NAME=$(echo $NONSSL_VHOSTS $SSL_VHOSTS| tr '\n' ' ')
 
       echo "-----> Creating $SCHEME nginx.conf"
-      echo "upstream $APP { server 127.0.0.1:$PORT; }" > $DOKKU_ROOT/$APP/nginx.conf
+      echo "upstream $APP { server $IP:$PORT; }" > $DOKKU_ROOT/$APP/nginx.conf
       eval "cat <<< \"$(< $NGINX_CONF)\" >> $DOKKU_ROOT/$APP/nginx.conf"
 
       echo "-----> Running nginx-pre-reload"

plugins/nginx-vhosts/post-deploy

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 
-APP="$1"; PORT="$2"
+APP="$1"; PORT="$2"; IP="$3"
 
 set +e; NO_VHOST=$(dokku config:get $APP NO_VHOST); set -e
 
@@ -11,4 +11,4 @@ elif [[ ! -f "$DOKKU_ROOT/$APP/VHOST" ]]; then
   dokku domains:setup $APP
 fi
 
-dokku nginx:build-config $APP $PORT
+dokku nginx:build-config $APP $PORT $IP