diff --git a/helpers/ab-nginx.sh b/helpers/ab-nginx.sh
index e956ccc..63b1985 100644
--- a/helpers/ab-nginx.sh
+++ b/helpers/ab-nginx.sh
@@ -6,19 +6,19 @@
 
 # text formatting presets
 if command -v tput >/dev/null; then
-  cyan=$(tput bold)$(tput setaf 6)
-  err=$(tput bold)$(tput setaf 1)
-  magenta=$(tput sgr0)$(tput setaf 5)
-  norm=$(tput sgr0)
-  yellow=$(tput sgr0)$(tput setaf 3)
-  width=$(tput cols)
+    cyan=$(tput bold)$(tput setaf 6)
+    err=$(tput bold)$(tput setaf 1)
+    magenta=$(tput sgr0)$(tput setaf 5)
+    norm=$(tput sgr0)
+    yellow=$(tput sgr0)$(tput setaf 3)
+    width=$(tput cols)
 else
-  cyan=''
-  err=''
-  magenta=''
-  norm=''
-  yellow=''
-  width=80
+    cyan=''
+    err=''
+    magenta=''
+    norm=''
+    yellow=''
+    width=80
 fi
 
 ### parameter defaults
@@ -36,77 +36,80 @@ unset vmount
 ### functions
 
 checkExist() {
-  if [ "$1" = 'file' ]; then
-    if [ ! -f "$2" ]; then
-      printf "%s\nCannot find file: '$2'. Exiting.\n%s" "$err" "$norm"
-      exit 3
+    if [ "$1" = 'file' ]; then
+        if [ ! -f "$2" ]; then
+            printf "%s\nCannot find file: '$2'. Exiting.\n%s" "$err" "$norm"
+            exit 3
+        fi
+    elif [ "$1" = 'dir' ]; then
+        if [ ! -d "$2" ]; then
+            printf "%s\nCannot find directory: '$2'. Exiting.\n$%s" "$err" "$norm"
+            exit 3
+        fi
     fi
-  elif [ "$1" = 'dir' ]; then
-    if [ ! -d "$2" ]; then
-      printf "%s\nCannot find directory: '$2'. Exiting.\n$%s" "$err" "$norm"
-      exit 3
-    fi
-  fi
-  return 0
+    return 0
 }
 
 scriptHelp() {
-  printf "\n%s%1000s\n" "$magenta" | tr " " "-" | cut -c -$width
-  printf "%s" "$norm"
-  textblock "This is a simple helper script so you can avoid typing lengthy commands when working with the ab-nginx container."
-  textblock "The script reads the contents of 'ab-nginx.params' and constructs various 'docker run' commands based on that file. The biggest time-saver is working with certificates. If they are specified in the params file, the script will automatically bind-mount them so nginx serves content via SSL by default."
-  newline
-  textblock "If you run the script with no parameters, it will execute the container 'normally': Run in detached mode with nginx automatically launched. If you specified certificates, nginx will serve over SSL by default."
-  textblock "Note: Containers (except shell) are always set to restart 'unless-stopped'. You must remove them manually if desired."
-  printf "%s" "$magenta"
-  newline
-  textblock "The script has the following (optional) parameters:"
-  textblockParam 'parameter in cyan' 'default in yellow'
-  newline
-  textblockParam '-n|--name' 'ab-nginx'
-  textblock "Change the name of the container. This is cosmetic and does not affect operation in any way."
-  newline
-  textblockParam '-s|--shell' 'off: run in detached mode'
-  textblock "Enter the container using an interactive ASH/BusyBox shell. This happens after startup operations but *before* nginx is actually started. This is a great way to see configuration changes possibly stopping nginx from starting normally."
-  printf "%s" "$yellow"
-  newline
-  textblock "More information can be found at: https://git.asifbacchus.dev/ab-docker/ab-nginx/wiki"
-  printf "%s%1000s\n" "$magenta" | tr " " "-" | cut -c -$width
-  exit 0
+    printf "\n%s" "$magenta"
+    printf '%.0s-' $(seq "$width")
+    printf "\n%s" "$norm"
+    textblock "This is a simple helper script so you can avoid typing lengthy commands when working with the ab-nginx container."
+    textblock "The script reads the contents of 'ab-nginx.params' and constructs various 'docker run' commands based on that file. The biggest time-saver is working with certificates. If they are specified in the params file, the script will automatically bind-mount them so nginx serves content via SSL by default."
+    newline
+    textblock "If you run the script with no parameters, it will execute the container 'normally': Run in detached mode with nginx automatically launched. If you specified certificates, nginx will serve over SSL by default."
+    textblock "Note: Containers (except shell) are always set to restart 'unless-stopped'. You must remove them manually if desired."
+    printf "%s" "$magenta"
+    newline
+    textblock "The script has the following (optional) parameters:"
+    textblockParam 'parameter in cyan' 'default in yellow'
+    newline
+    textblockParam '-n|--name' 'ab-nginx'
+    textblock "Change the name of the container. This is cosmetic and does not affect operation in any way."
+    newline
+    textblockParam '-s|--shell' 'off: run in detached mode'
+    textblock "Enter the container using an interactive ASH/BusyBox shell. This happens after startup operations but *before* nginx is actually started. This is a great way to see configuration changes possibly stopping nginx from starting normally."
+    printf "%s" "$yellow"
+    newline
+    textblock "More information can be found at: https://git.asifbacchus.dev/ab-docker/ab-nginx/wiki"
+    printf "\n%s" "$magenta"
+    printf '%.0s-' $(seq "$width")
+    printf "\n%s" "$norm"
+    exit 0
 }
 
 newline() {
-  printf "\n"
+    printf "\n"
 }
 
 textblock() {
-  printf "%s\n" "$1" | fold -w "$width" -s
+    printf "%s\n" "$1" | fold -w "$width" -s
 }
 
 textblockParam() {
-  if [ -z "$2" ]; then
-    # no default
-    printf "%s%s%s\n" "$cyan" "$1" "$norm"
-  else
-    # default param provided
-    printf "%s%s %s(%s)%s\n" "$cyan" "$1" "$yellow" "$2" "$norm"
-  fi
+    if [ -z "$2" ]; then
+        # no default
+        printf "%s%s%s\n" "$cyan" "$1" "$norm"
+    else
+        # default param provided
+        printf "%s%s %s(%s)%s\n" "$cyan" "$1" "$yellow" "$2" "$norm"
+    fi
 }
 
 ### pre-requisite checks
 
 # is docker installed?
-if ! command -v docker > /dev/null; then
-  printf "%s\nCannot find docker... is it installed?\n%s" "$err" "$norm"
-  exit 2
+if ! command -v docker >/dev/null; then
+    printf "%s\nCannot find docker... is it installed?\n%s" "$err" "$norm"
+    exit 2
 fi
 
 # is user root or in the docker group?
 if [ ! "$(id -u)" -eq 0 ]; then
-  if ! id -Gn | grep docker >/dev/null; then
-    printf "%s\nYou must either be root or in the 'docker' group to run this script since you must be able to actually start the container! Exiting.\n$%s" "$err" "$norm"
-    exit 2
-  fi
+    if ! id -Gn | grep docker >/dev/null; then
+        printf "%s\nYou must either be root or in the 'docker' group to run this script since you must be able to actually start the container! Exiting.\n$%s" "$err" "$norm"
+        exit 2
+    fi
 fi
 
 # does the params file exist?
@@ -117,7 +120,7 @@ checkExist 'file' './ab-nginx.params'
 
 # fix case of TLS13_ONLY var
 if [ "$TLS13_ONLY" ]; then
-  TLS13_ONLY=$(printf "%s" "$TLS13_ONLY" | tr "[:lower:]" "[:upper:]")
+    TLS13_ONLY=$(printf "%s" "$TLS13_ONLY" | tr "[:lower:]" "[:upper:]")
 fi
 
 # check for certs if using SSL
@@ -127,41 +130,41 @@ if [ "$SSL_CHAIN" ]; then checkExist 'file' "$SSL_CHAIN"; fi
 
 # check for DHparam if using TLS1.2
 if [ "$SSL_CERT" ] && [ "$TLS13_ONLY" = 'FALSE' ]; then
-  if [ -z "$DH" ]; then
-    printf "%s\nA DHparam file must be specified when using TLS 1.2. Exiting.%s\n" "$err" "$norm"
-    exit 5
-  else
-    checkExist 'file' "$DH"
-  fi
+    if [ -z "$DH" ]; then
+        printf "%s\nA DHparam file must be specified when using TLS 1.2. Exiting.%s\n" "$err" "$norm"
+        exit 5
+    else
+        checkExist 'file' "$DH"
+    fi
 fi
 
 # check if specified config directory exists
 if [ "$CONFIG_DIR" ]; then
-  checkExist 'dir' "$CONFIG_DIR"
+    checkExist 'dir' "$CONFIG_DIR"
 fi
 
 # check if specified server-block directory exists
 if [ "$SERVERS_DIR" ]; then
-  checkExist 'dir' "$SERVERS_DIR"
+    checkExist 'dir' "$SERVERS_DIR"
 fi
 
 # check if specified webroot directory exists
 if [ "$WEBROOT_DIR" ]; then
-  checkExist 'dir' "$WEBROOT_DIR"
+    checkExist 'dir' "$WEBROOT_DIR"
 fi
 
 # set up volume mounts
 if [ "$CONFIG_DIR" ]; then
-  vmount="$vmount -v $CONFIG_DIR:/etc/nginx/config"
+    vmount="$vmount -v $CONFIG_DIR:/etc/nginx/config"
 fi
 if [ "$SERVERS_DIR" ]; then
-  vmount="$vmount -v $SERVERS_DIR:/etc/nginx/sites"
+    vmount="$vmount -v $SERVERS_DIR:/etc/nginx/sites"
 fi
 if [ "$SNIPPETS_DIR" ]; then
-  vmount="$vmount -v $SNIPPETS_DIR:/etc/nginx/snippets"
+    vmount="$vmount -v $SNIPPETS_DIR:/etc/nginx/snippets"
 fi
 if [ "$WEBROOT_DIR" ]; then
-  vmount="$vmount -v $WEBROOT_DIR:/usr/share/nginx/html"
+    vmount="$vmount -v $WEBROOT_DIR:/usr/share/nginx/html"
 fi
 # trim leading whitespace
 vmount=${vmount##[[:space:]]}
@@ -171,68 +174,68 @@ if [ -z "$HOSTNAMES" ]; then HOSTNAMES="_"; fi
 
 # process startup parameters
 while [ $# -gt 0 ]; do
-  case "$1" in
-  -h | -\? | --help)
-    # display help
-    scriptHelp
-    exit 0
-    ;;
-  -s | --shell)
-    # start shell instead of default CMD
-    doShell=true
-    ;;
-  -n | --name)
-    # container name
-    if [ -z "$2" ]; then
-      printf "%s\nNo container name specified. Exiting.\n%s" "$err" "$norm"
-      exit 1
-    fi
-    container_name="$2"
+    case "$1" in
+    -h | -\? | --help)
+        # display help
+        scriptHelp
+        exit 0
+        ;;
+    -s | --shell)
+        # start shell instead of default CMD
+        doShell=true
+        ;;
+    -n | --name)
+        # container name
+        if [ -z "$2" ]; then
+            printf "%s\nNo container name specified. Exiting.\n%s" "$err" "$norm"
+            exit 1
+        fi
+        container_name="$2"
+        shift
+        ;;
+    *)
+        printf "%s\nUnknown option: %s\n" "$err" "$1"
+        printf "Use '--help' for valid options.\n\n%s" "$norm"
+        exit 1
+        ;;
+    esac
     shift
-    ;;
-  *)
-    printf "%s\nUnknown option: %s\n" "$err" "$1"
-    printf "Use '--help' for valid options.\n\n%s" "$norm"
-    exit 1
-    ;;
-  esac
-  shift
 done
 
 # create network if it doesn't already exist
 docker network inspect ${NETWORK} >/dev/null 2>&1 ||
-  docker network create \
-    --attachable \
-    --driver=bridge \
-    --subnet=${SUBNET} \
-    ${NETWORK}
+    docker network create \
+        --attachable \
+        --driver=bridge \
+        --subnet=${SUBNET} \
+        ${NETWORK}
 
 # run without TLS
 if [ -z "$SSL_CERT" ]; then
-  if [ "$doShell" = 'true' ]; then
-    # exec shell
-    printf "%s\nRunning SHELL on %s...%s\n" "$cyan" "$container_name" "$norm"
-    # shellcheck disable=SC2086
-    docker run --rm -it --name "${container_name}" \
-      --env-file ab-nginx.params \
-      -e SERVER_NAMES="$HOSTNAMES" \
-      $vmount \
-      --network=${NETWORK} \
-      -p ${HTTP_PORT}:80 \
-      docker.asifbacchus.dev/nginx/ab-nginx:latest /bin/sh
-  else
-    # exec normally
-    printf "%s\nRunning NGINX on %s...%s\n" "$cyan" "$container_name" "$norm"
-    # shellcheck disable=SC2086
-    docker run -d --name "${container_name}" \
-      --env-file ab-nginx.params \
-      -e SERVER_NAMES="$HOSTNAMES" \
-      $vmount \
-      --network=${NETWORK} \
-      -p ${HTTP_PORT}:80 \
-      --restart unless-stopped \
-      docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest}
-  fi
+    if [ "$doShell" = 'true' ]; then
+        # exec shell
+        printf "%s\nRunning SHELL on %s...%s\n" "$cyan" "$container_name" "$norm"
+        # shellcheck disable=SC2086
+        docker run --rm -it --name "${container_name}" \
+            --env-file ab-nginx.params \
+            -e SERVER_NAMES="$HOSTNAMES" \
+            $vmount \
+            --network=${NETWORK} \
+            -p ${HTTP_PORT}:80 \
+            docker.asifbacchus.dev/nginx/ab-nginx:latest /bin/sh
+    else
+        # exec normally
+        printf "%s\nRunning NGINX on %s...%s\n" "$cyan" "$container_name" "$norm"
+        # shellcheck disable=SC2086
+        docker run -d --name "${container_name}" \
+            --env-file ab-nginx.params \
+            -e SERVER_NAMES="$HOSTNAMES" \
+            $vmount \
+            --network=${NETWORK} \
+            -p ${HTTP_PORT}:80 \
+            --restart unless-stopped \
+            docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest}
+    fi
 # run with TLS
 else
     if [ "$doShell" = 'true' ]; then
@@ -243,15 +246,15 @@ else
         fi
         # shellcheck disable=SC2086
         docker run --rm -it --name "${container_name}" \
-          --env-file ab-nginx.params \
-          -e SERVER_NAMES="$HOSTNAMES" \
-          $vmount \
-          --network=${NETWORK} \
-          -v "$SSL_CERT":/certs/fullchain.pem:ro \
-          -v "$SSL_KEY":/certs/privkey.pem:ro \
-          -v "$SSL_CHAIN":/certs/chain.pem:ro \
-          -p ${HTTP_PORT}:80 -p ${HTTPS_PORT}:443 \
-          docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest} /bin/sh
+            --env-file ab-nginx.params \
+            -e SERVER_NAMES="$HOSTNAMES" \
+            $vmount \
+            --network=${NETWORK} \
+            -v "$SSL_CERT":/certs/fullchain.pem:ro \
+            -v "$SSL_KEY":/certs/privkey.pem:ro \
+            -v "$SSL_CHAIN":/certs/chain.pem:ro \
+            -p ${HTTP_PORT}:80 -p ${HTTPS_PORT}:443 \
+            docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest} /bin/sh
     else
         if [ "$TLS13_ONLY" = 'FALSE' ]; then
             printf "%s\nRunning NGINX on %s (TLS 1.2)...%s\n" "$cyan" "$container_name" "$norm"
@@ -260,16 +263,16 @@ else
         fi
         # shellcheck disable=SC2086
         docker run -d --name "${container_name}" \
-          --env-file ab-nginx.params \
-          -e SERVER_NAMES="$HOSTNAMES" \
-          $vmount \
-          --network=${NETWORK} \
-          -v "$SSL_CERT":/certs/fullchain.pem:ro \
-          -v "$SSL_KEY":/certs/privkey.pem:ro \
-          -v "$SSL_CHAIN":/certs/chain.pem:ro \
-          -p ${HTTP_PORT}:80 -p ${HTTPS_PORT}:443 \
-          --restart unless-stopped \
-          docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest}
+            --env-file ab-nginx.params \
+            -e SERVER_NAMES="$HOSTNAMES" \
+            $vmount \
+            --network=${NETWORK} \
+            -v "$SSL_CERT":/certs/fullchain.pem:ro \
+            -v "$SSL_KEY":/certs/privkey.pem:ro \
+            -v "$SSL_CHAIN":/certs/chain.pem:ro \
+            -p ${HTTP_PORT}:80 -p ${HTTPS_PORT}:443 \
+            --restart unless-stopped \
+            docker.asifbacchus.dev/nginx/ab-nginx:${TAG:-latest}
     fi
 fi