fix(typos): fix various typos

- if doDocker throws an error, cleanup is called which again calls doDocker
- resolve this loop by passing a variable from cleanup

backup/backup.sh

@@ -70,6 +70,7 @@ badParam() {
 cleanup() {
     # cleanup 503 if copied
     if [ "$err503Copied" -eq 1 ]; then
+        # shellcheck disable=SC2129
         if ! rm -f "$webroot/$err503File" 2>>"$logFile"; then
             printf "%s[%s] -- [WARNING] Could not remove 503 error page." \
                 "$warn" "$(stamp)" >>"$logFile"
@@ -98,34 +99,34 @@ cleanup() {
         printf "%s[%s] -- [INFO] POSTFIX container is running --%s\n" \
             "$cyan" "$(stamp)" "$norm" >>"$logFile"
     else
-        exitError 102 'Could not start POSTFIX container.'
+        exitError 102 'Could not start POSTFIX container.' 'final'
     fi
     doDocker start dovecot
     if [ "$dockerResultState" = "true" ]; then
         printf "%s[%s] -- [INFO] DOVECOT container is running --%s\n" \
             "$cyan" "$(stamp)" "$norm" >>"$logFile"
     else
-        exitError 102 'Could not start DOVECOT container.'
+        exitError 102 'Could not start DOVECOT container.' 'final'
     fi
 }
 
 doDocker() {
-    containerName="$(docker ps -a --format '{{ .Names }}' --filter name=${COMPOSE_PROJECT_NAME}_${2}-mailcow_1)"
+    containerName="$(docker ps -a --format '{{ .Names }}' --filter "name=${COMPOSE_PROJECT_NAME}_${2}-mailcow_1" --filter "name=${COMPOSE_PROJECT_NAME}-${2}-mailcow-1")"
 
     # determine action to take
     if [ "$1" = "stop" ]; then
         printf "%s[%s] -- [INFO] Stopping %s-mailcow container --%s\n" \
             "$cyan" "$(stamp)" "$2" "$norm" >>"$logFile"
-        docker-compose -f "$mcDockerCompose" stop --timeout "$dockerStopTimeout" "$2-mailcow" 2>>"$logFile"
+        ${dockerCmd} -f "$mcDockerCompose" stop --timeout "$dockerStopTimeout" "$2-mailcow" 2>>"$logFile"
         # set result vars
-        dockerResultState="$(docker inspect -f '{{ .State.Running }}' $containerName)"
-        dockerResultExit="$(docker inspect -f '{{ .State.ExitCode }}' $containerName)"
+        dockerResultState="$(docker inspect -f '{{ .State.Running }}' "$containerName")"
+        dockerResultExit="$(docker inspect -f '{{ .State.ExitCode }}' "$containerName")"
     elif [ "$1" = "start" ]; then
         printf "%s[%s] -- [INFO] Starting %s-mailcow container --%s\n" \
             "$cyan" "$(stamp)" "$2" "$norm" >>"$logFile"
-        docker-compose -f "$mcDockerCompose" start "$2-mailcow" 2>>"$logFile"
+        ${dockerCmd} -f "$mcDockerCompose" start "$2-mailcow" 2>>"$logFile"
         # set result vars
-        dockerResultState="$(docker inspect -f '{{ .State.Running }}' $containerName)"
+        dockerResultState="$(docker inspect -f '{{ .State.Running }}' "$containerName")"
     fi
 }
 
@@ -133,7 +134,7 @@ doDocker() {
 exitError() {
     printf "%s[%s] -- [ERROR] %s: %s --%s\n" \
         "$err" "$(stamp)" "$1" "$2" "$norm" >>"$logFile"
-    cleanup
+    if [ ! "$3" = "final" ]; then cleanup; fi
     # note script completion with error
     printf "%s[%s] --- %s execution completed with error ---%s\n" \
         "$err" "$(stamp)" "$scriptName" "$norm" >>"$logFile"
@@ -144,7 +145,8 @@ exitError() {
 scriptHelp() {
     newline
     printf "%sUsage: %s [parameters]%s\n\n" "$bold" "$scriptName" "$norm"
-    textblock "There are NO mandatory parameters. If a parameter is not supplied, its default value will be used. In the case of a switch parameter, it will remain DEactivated if NOT specified."
+    textblock "There are NO mandatory parameters. If a parameter is not supplied, its default value will be used. In 
+    the case of a switch parameter, it will remain *deactivated* if NOT specified."
     newline
     textblock "Parameters are listed then followed by a description of their effect on the following line. Finally, if a default value exists, it will be listed on the next line in (parentheses)."
     newline
@@ -194,7 +196,7 @@ scriptHelp() {
     textblock "${magenta}--- mailcow related ---${norm}"
     newline
     switchTextblock "-d | --docker-compose"
-    textblock "Path to mailcow's 'docker-compose.yml' file."
+    textblock "Path to the mailcow 'docker-compose.yml' file."
     defaultsTextblock "(/opt/mailcow-dockerized/docker-compose.yml)"
     newline
     switchTextblock "-m | --mailcow-config"
@@ -263,6 +265,7 @@ configDetails="$scriptPath/${scriptName%.*}.details"
 err503Copied=0
 sqlDumpDirCreated=0
 exclusions=0
+dockerCmd="docker compose"
 borgPath="/usr/bin/borg"
 # borg output verbosity -- normal
 borgCreateParams='--stats'
@@ -430,6 +433,14 @@ if [ "$(id -u)" -ne 0 ]; then
     printf "\n%sERROR: script MUST be run as ROOT%s\n\n" "$err" "$norm"
     exit 2
 fi
+# verify compose installed and set proper commands based on version
+if ! (docker compose version >/dev/null 2>&1); then
+    if ! (docker-compose --version >/dev/null 2>&1); then
+        printf "\n%sERROR: Docker Compose not installed or not functioning%s\n\n" "$err" "$norm"
+        exit 3
+    fi
+    dockerCmd="docker-compose"
+fi
 # does the details file exist?
 if [ ! -f "$configDetails" ]; then
     badParam dne "(--details default)" "$configDetails"
@@ -437,7 +448,7 @@ fi
 # is borg installed?
 if ! find "$borgPath" -type f -executable >/dev/null 2>&1; then
     printf "\n%sERROR: BORG cannot be found in the specified or default location on this system!%s\n\n" "$err" "$norm"
-    exit 3
+    exit 4
 fi
 # if 503 functionality is enabled, do 503 related files exist?
 if [ "$use503" -eq 1 ]; then
@@ -689,9 +700,9 @@ fi
 ### dump SQL
 printf "%s[%s] -- [INFO] Dumping mailcow SQL database --%s\n" \
     "$cyan" "$(stamp)" "$norm" >>"$logFile"
-docker-compose exec -T mysql-mailcow mysqldump --default-character-set=utf8mb4 \
+${dockerCmd} exec -T mysql-mailcow mysqldump --default-character-set=utf8mb4 \
     -u${DBUSER} -p${DBPASS} ${DBNAME} >"$sqlDumpDir/$sqlDumpFile" 2>>"$logFile"
-dumpResult=$(docker-compose exec -T mysql-mailcow echo "$?")
+dumpResult=$(${dockerCmd} exec -T mysql-mailcow echo "$?")
 if [ "$dumpResult" -eq 0 ]; then
     printf "%s[%s] -- [INFO] SQL database dumped successfully --%s\n" \
         "$cyan" "$(stamp)" "$norm" >>"$logFile"
@@ -707,8 +718,8 @@ fi
 # dump redis
 printf "%s[%s] -- [INFO] Dumping mailcow redis database --%s\n" \
     "$cyan" "$(stamp)" "$norm" >>"$logFile"
-docker-compose exec -T redis-mailcow redis-cli save >>"$logFile" 2>&1
-rdumpResult=$(docker-compose exec -T redis-mailcow echo "$?")
+${dockerCmd} exec -T redis-mailcow redis-cli save >>"$logFile" 2>&1
+rdumpResult=$(${dockerCmd} exec -T redis-mailcow echo "$?")
 if [ "$rdumpResult" -eq 0 ]; then
     printf "%s[%s] -- [INFO] mailcow redis dumped successfully --%s\n" \
         "$cyan" "$(stamp)" "$norm" >>"$logFile"
@@ -772,10 +783,11 @@ else
     warnCount=$((warnCount + 1))
 fi
 
-### execute borg prune if paramters are provided, otherwise skip with a warning
+### execute borg prune if parameters are provided, otherwise skip with a warning
 if [ -n "${borgPruneSettings}" ]; then
     printf "%s[%s] -- [INFO] Executing borg prune operation --%s\n" \
         "$cyan" "$(stamp)" "$norm" >>"$logFile"
+    # shellcheck disable=SC2086
     "${borgPath}" prune --show-rc -v ${borgPruneParams} ${borgPruneSettings} \
         2>>"$logFile"
     borgPruneResult="$?"
@@ -834,7 +846,8 @@ exit 0
 ### error codes
 # 1: parameter error
 # 2: not run as root
-# 3: borg not installed
+# 3: docker compose not installed or not functioning
+# 4: borg not installed
 # 99: TERM signal trapped
 # 100: could not change to mailcow-dockerized directory
 # 101: could not stop container(s)