[Update] Formatting; Added new options

update.sh

@@ -32,8 +32,21 @@ for option in ${CONFIG_ARRAY[@]}; do
   elif [[ ${option} == "LOG_LINES" ]]; then
     if ! grep -q ${option} mailcow.conf; then
       echo "Adding new option \"${option}\" to mailcow.conf"
+      echo '# Max log lines per service to keep in Redis logs' >> mailcow.conf
       echo "LOG_LINES=9999" >> mailcow.conf
     fi
+  elif [[ ${option} == "IPV4_NETWORK" ]]; then
+    if ! grep -q ${option} mailcow.conf; then
+      echo "Adding new option \"${option}\" to mailcow.conf"
+      echo '# Internal IPv4 /24 subnet, format n.n.n. (expands to n.n.n.0/24)' >> mailcow.conf
+      echo "IPV4_NETWORK=172.22.1" >> mailcow.conf
+    fi
+  elif [[ ${option} == "IPV6_NETWORK" ]]; then
+    if ! grep -q ${option} mailcow.conf; then
+      echo "Adding new option \"${option}\" to mailcow.conf"
+      echo '# Internal IPv6 subnet in fd00::/8' >> mailcow.conf
+      echo "IPV6_NETWORK=fd4d:6169:6c63:6f77::/64" >> mailcow.conf
+    fi
   elif ! grep -q ${option} mailcow.conf; then
     echo "Adding new option \"${option}\" to mailcow.conf"
     echo "${option}=n" >> mailcow.conf
@@ -45,7 +58,7 @@ curl -o /dev/null google.com -sm3
 if [[ $? != 0 ]]; then
   echo -e "\e[31mfailed\e[0m"
   exit 1
-else
+  else
   echo -e "\e[32mOK\e[0m"
 fi
 
@@ -56,7 +69,7 @@ BRANCH=$(git rev-parse --abbrev-ref HEAD)
 declare -a DC_PARAMS
 
 while (($#)); do
-case "${1}" in
+  case "${1}" in
     --check|-c)
       echo "Checking remote code for updates..."
       git fetch origin ${BRANCH}
@@ -71,7 +84,7 @@ case "${1}" in
     --no-start)
       DC_PARAMS=(${DC_PARAMS[@]} "--no-start")
     ;;
-esac
+  esac
 done
 
 echo -e "\e[32mChecking for newer update script...\e[0m"
@@ -87,7 +100,7 @@ fi
 
 if [[ -f mailcow.conf ]]; then
   source mailcow.conf
-else
+  else
   echo -e "\e[31mNo mailcow.conf - is mailcow installed?\e[0m"
   exit 1
 fi
@@ -138,7 +151,7 @@ if [[ $(curl -sL -w "%{http_code}" https://www.servercow.de/docker-compose/lates
   LATEST_COMPOSE=$(curl -#L https://www.servercow.de/docker-compose/latest.php)
   curl -#L https://github.com/docker/compose/releases/download/${LATEST_COMPOSE}/docker-compose-$(uname -s)-$(uname -m) > $(which docker-compose)
   chmod +x $(which docker-compose)
-else
+  else
   echo -e "\e[33mCannot determine latest docker-compose version, skipping...\e[0m"
 fi
 
@@ -161,12 +174,10 @@ for container in $(grep -oP "image: \Kmailcow.+" docker-compose.yml); do
   TAG=${container/*:}
   V_MAIN=${container/*.}
   V_SUB=${container/*.}
-
   EXISTING_TAGS=$(docker images | grep ${REPOSITORY} | awk '{ print $2 }')
   for existing_tag in ${EXISTING_TAGS[@]}; do
     V_MAIN_EXISTING=${existing_tag/*.}
     V_SUB_EXISTING=${existing_tag/*.}
-
     # Not an integer
     [[ ! $V_MAIN_EXISTING =~ ^[0-9]+$ ]] && continue
     [[ ! $V_SUB_EXISTING =~ ^[0-9]+$ ]] && continue
@@ -183,6 +194,7 @@ for container in $(grep -oP "image: \Kmailcow.+" docker-compose.yml); do
     fi
   done
 done
+
 if [[ ! -z ${IMGS_TO_DELETE[*]} ]]; then
   echo "Run the following command to delete unused image tags:"
   echo