feature(helpers): change docker run cmd

- add user specification so UID/GID always specified
- add container default values

helpers/ab-nginx.params.template

@@ -17,10 +17,11 @@
 # ensure the container can read and/or write to locations on the host or
 # has access to files shared between members of a container stack.
 # REQUIRED: NO
-# DEFAULT: UID=8080, GID=8080
+# DEFAULT: NGINX_UID=8080, NGINX_GID=8080
 # VALID OPTIONS: any permissible and available UID/GID value
-#UID=8080
-#GID=8080
+#NGINX_UID=8080
+#NGINX_GID=8080
+
 
 #
 # Network options

helpers/ab-nginx.sh

@@ -218,6 +218,7 @@ if [ -z "$SSL_CERT" ]; then
         # shellcheck disable=SC2086
         docker run --rm -it --name "${container_name}" \
             --env-file ab-nginx.params \
+            --user="${NGINX_UID:-8080}:${NGINX_GID:-8080}" \
             -e SERVER_NAMES="$HOSTNAMES" \
             $vmount \
             --network=${NETWORK} \
@@ -229,6 +230,7 @@ if [ -z "$SSL_CERT" ]; then
         # shellcheck disable=SC2086
         docker run -d --name "${container_name}" \
             --env-file ab-nginx.params \
+            --user="${NGINX_UID:-8080}:${NGINX_GID:-8080}" \
             -e SERVER_NAMES="$HOSTNAMES" \
             $vmount \
             --network=${NETWORK} \
@@ -247,6 +249,7 @@ else
         # shellcheck disable=SC2086
         docker run --rm -it --name "${container_name}" \
             --env-file ab-nginx.params \
+            --user="${NGINX_UID:-8080}:${NGINX_GID:-8080}" \
             -e SERVER_NAMES="$HOSTNAMES" \
             $vmount \
             --network=${NETWORK} \
@@ -264,6 +267,7 @@ else
         # shellcheck disable=SC2086
         docker run -d --name "${container_name}" \
             --env-file ab-nginx.params \
+            --user="${NGINX_UID:-8080}:${NGINX_GID:-8080}" \
             -e SERVER_NAMES="$HOSTNAMES" \
             $vmount \
             --network=${NETWORK} \