docker check before installation

Checking and changing the locale for correct error handling by the server controller.
Change the stub command for check for available packages for Arch Linux.
Check which containerization application will be installed.

client/server_scripts/install_docker.sh

@@ -1,16 +1,23 @@
-if which apt-get > /dev/null 2>&1; then pm=$(which apt-get); silent_inst="-yq install"; check_pkgs="-yq update"; docker_pkg="docker.io"; dist="debian";\
-elif which dnf > /dev/null 2>&1; then pm=$(which dnf); silent_inst="-yq install"; check_pkgs="-yq check-update"; docker_pkg="docker"; dist="fedora";\
-elif which yum > /dev/null 2>&1; then pm=$(which yum); silent_inst="-y -q install"; check_pkgs="-y -q check-update"; docker_pkg="docker"; dist="centos";\
-elif which pacman > /dev/null 2>&1; then pm=$(which pacman); silent_inst="-S --noconfirm --noprogressbar --quiet"; check_pkgs="> /dev/null 2>&1"; docker_pkg="docker"; dist="archlinux";\
+if which apt-get > /dev/null 2>&1; then pm=$(which apt-get); silent_inst="-yq install"; check_pkgs="-yq update"; what_pkg="-s install"; docker_pkg="docker.io"; dist="debian";\
+elif which dnf > /dev/null 2>&1; then pm=$(which dnf); silent_inst="-yq install"; check_pkgs="-yq check-update"; what_pkg="--assumeno install --setopt=tsflags=test"; docker_pkg="docker"; dist="fedora";\
+elif which yum > /dev/null 2>&1; then pm=$(which yum); silent_inst="-y -q install"; check_pkgs="-y -q check-update"; what_pkg="--assumeno install --setopt=tsflags=test"; docker_pkg="docker"; dist="centos";\
+elif which pacman > /dev/null 2>&1; then pm=$(which pacman); silent_inst="-S --noconfirm --noprogressbar --quiet"; check_pkgs="-Sup"; what_pkg="-Sp"; docker_pkg="docker"; dist="archlinux";\
 else echo "Packet manager not found"; exit 1; fi;\
-echo "Dist: $dist, Packet manager: $pm, Install command: $silent_inst, Check pkgs command: $check_pkgs, Docker pkg: $docker_pkg";\
+echo "Dist: $dist, Packet manager: $pm, Install command: $silent_inst, Check pkgs command: $check_pkgs, What pkg command: $what_pkg, Docker pkg: $docker_pkg";\
 if [ "$dist" = "debian" ]; then export DEBIAN_FRONTEND=noninteractive; fi;\
+if [ "$(echo $LANG)" != "en_US.UTF-8" ] && [ "$(echo $LANG)" != "C.UTF-8" ]; then \
+  if [ "$(locale -a | grep -c 'en_US.utf8')" != "0" ]; then export LC_ALL=en_US.UTF-8;\
+  else export LC_ALL=C.UTF-8; fi;\
+fi;\
 if ! command -v sudo > /dev/null 2>&1; then $pm $check_pkgs; $pm $silent_inst sudo; fi;\
 if ! command -v fuser > /dev/null 2>&1; then sudo $pm $check_pkgs; sudo $pm $silent_inst psmisc; fi;\
 if ! command -v lsof > /dev/null 2>&1; then sudo $pm $check_pkgs; sudo $pm $silent_inst lsof; fi;\
-if ! command -v docker > /dev/null 2>&1; then \
-  sudo $pm $check_pkgs; sudo $pm $silent_inst $docker_pkg;\
+if ! command -v docker > /dev/null 2>&1; then sudo $pm $check_pkgs;\
+  check_docker=$(sudo $pm $what_pkg $docker_pkg 2>&1 | grep -c -e podman-docker -e moby-engine);\
+  if [ "$check_docker" != "0" ]; then echo "Docker is not supported"; exit 1;\
+  else sudo $pm $silent_inst $docker_pkg;\
   sleep 5; sudo systemctl enable --now docker; sleep 5;\
+  fi;\
 fi;\
 if [ "$(systemctl is-active docker)" != "active" ]; then \
   sudo $pm $check_pkgs; sudo $pm $silent_inst $docker_pkg;\