diff --git a/helpers/ab-nginx.params.template b/helpers/ab-nginx.params.template
new file mode 100644
index 0000000..80e545d
--- /dev/null
+++ b/helpers/ab-nginx.params.template
@@ -0,0 +1,175 @@
+###
+### Parameters for use by ab-nginx helper script
+###
+### If you are NOT using the 'ab-nginx.sh' script file to start the container,
+### then you don't have to do anything with this file.
+###
+
+
+#
+# Container options
+#
+
+# Specify a particular tag to 'version pin' the ab-nginx container.
+TAG=latest
+
+# Specify a runtime UID and GID for the container user. This is useful to
+# 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: NGINX_UID=8080, NGINX_GID=8080
+# VALID OPTIONS: any permissible and available UID/GID value
+NGINX_UID=8080
+NGINX_GID=8080
+
+
+#
+# Network options
+#
+
+# If you want to specify a network to which this container should bind or one
+# that should be created, then use this variable. If you don't know what this
+# means or if you just want to use the default, leave this variable commented.
+# REQUIRED: NO
+# DEFAULT: nginx_network
+# VALID OPTIONS: network names acceptable to the docker engine
+NETWORK=nginx_network
+
+# If you want to specify a particular IP subnet for the network to be created
+# as per the above variable, specify it here.  Again, if you don't know what
+# this means, just leave this variable commented.
+# REQUIRED: NO
+# DEFAULT: '172.31.254.0/24'
+# VALID OPTIONS: subnet in CIDR format
+SUBNET='172.31.254.0/24'
+
+
+#
+# Timezone
+#
+
+# This doesn't impact any functionality of the container, but it does make your
+# logs easier to understand if they report the correct local time, right? Valid
+# options can be found at
+#   https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+# REQUIRED: NO
+# DEFAULT: Etc/UTC
+# VALID OPTIONS: IANA time zones in TZ format
+TZ=Etc/UTC
+
+
+#
+# NGINX options
+#
+
+# Hostnames to which this instance of NGINX should answer:
+# By default, this is set to '_' meaning 'match anything'.  However, that won't
+# work if you're using SSL certificates! Multiple hostnames must be space
+# delimited and "enclosed in quotes".
+#
+# This is NOT required if you are supplying your own server blocks via
+# 'SERVERS_DIR'
+#
+# REQUIRED: YES, if using SSL and default server-blocks
+# DEFAULT: "_"
+# EXAMPLE: HOSTNAMES="domain.tld www.domain.tld server.domain.tld alt.domain.tld"
+HOSTNAMES="_"
+
+# Ports to listen on:
+# If you need to use ports other than HTTP=80 and HTTPS=443, remember to set up
+# your server blocks accordingly!
+#
+# If you're using the default server-blocks, they will auto-adjust to whatever
+# you use here.
+# REQUIRED: NO
+# DEFAULTS: 80 and 443, respectively
+HTTP_PORT=80
+HTTPS_PORT=443
+
+# Access logging (global preference):
+# Unless overridden in a server/location block, access logging will be handled
+# according to this setting. Logs are printed to the container console.
+# REQUIRED: NO
+# DEFAULT: OFF
+# VALID OPTIONS: 'ON' or 'OFF'
+ACCESS_LOG=OFF
+
+
+#
+# Content locations
+# Whatever you specify here will replace the default files in the container with
+# your content/configurations. You may comment any/all of the following lines to
+# disable them use the container defaults.
+#
+
+# Specify a directory containing your NGINX configurations (if any)
+# Remember that these will be all be applied in the HTTP configuration context.
+# Only files with a ".conf" extension will be loaded!  If you want to disable a
+# file, simply change its extension (i.e. '.conf.disabled').
+#
+# REMEMBER: Your configuration files must be readable by the container UID/GID!
+CONFIG_DIR=$(pwd)/config
+
+# Specify a directory containing your NGINX server-block configurations (if any)
+# If you are just serving static content from the 'webroot', you can use the
+# container default server-blocks and comment this variable.
+#
+# More likely, you will have your own server blocks.  Remember, files are
+# processed in order so consider starting file names with numbers
+#   (i.e. 00-first_server.conf, 05-second_server.conf)
+#
+# Only files with a ".conf" extension will be loaded!  If you want to disable a
+#   file, simply change its extension (i.e. '.conf.disabled').
+#
+# REMEMBER: Your server-block files must be readable by the container UID/GID!
+SERVERS_DIR=$(pwd)/sites
+
+# Specify a directory containing 'snippets' of NGINX code you want/need to
+# reference in other configuration files. Pointers to other SSL certificates for
+# hosted domains or commonly used headers are good examples.
+#
+# You can then "include /etc/nginx/snippets/yourSnippet.conf;" in your configs
+# instead of having to type the same thing many times.
+
+# This is totally optional! Comment this variable to disable it.
+# REMEMBER: Your snippets must be readable by the container UID/GID!
+SNIPPETS_DIR=$(pwd)/snippets
+
+# Specify a directory with the content you want to serve.
+# REMEMBER: This directory must be readable by the container UID/GID!
+WEBROOT_DIR=/var/www
+
+
+#
+# SSL options:
+#
+
+# Enable HSTS only AFTER you've tested SSL implementation!  Container sets the
+# header to require SSL for 6 months! Subdomains are NOT included.
+# REQUIRED: NO
+# DEFAULT: FALSE
+# VALID OPTIONS: 'TRUE', 'FALSE'
+HSTS=FALSE
+
+# TLS 1.3 mode:
+#   If 'FALSE' (default), NGINX will accept both TLS 1.2 and 1.3 connections.
+#   If 'TRUE', only TLS 1.3 connections will be accepted.
+TLS13_ONLY=FALSE
+
+
+#
+# Certificate files
+#
+# If you are mounting symlinks you MUST specify the full path of the symlink so
+# the target is resolved!
+#
+# REMEMBER: ALL files must be readable by container UID/GID!
+# EXAMPLES:
+#    SSL_CERT=/path/to/your/ssl-certificate/fullchain.pem
+#    SSL_KEY=/path/to/your/ssl-private-key/privkey.pem
+#    SSL_CHAIN=/path/to/your/ssl-certificate-chain/chain.pem
+SSL_CERT=""
+SSL_KEY=""
+SSL_CHAIN=""
+
+#EOF
diff --git a/helpers/ab-nginx.sh b/helpers/ab-nginx.sh
index cf012be..41bbdf5 100644
--- a/helpers/ab-nginx.sh
+++ b/helpers/ab-nginx.sh
@@ -231,6 +231,7 @@ fi
 checkExist 'file' './ab-nginx.params'
 
 # read .params file
+# shellcheck source=ab-nginx.params.template
 . "./ab-nginx.params"
 
 # fix case of TLS13_ONLY var