Installer v2 (#3798)

* add initial advanced installer

* add symlink

* add dist detection

* make output uniform

* switch command to use wget
leave the installer on device

* regen script

* only install if not already there

* add os/version check
Closes #3835

* regenerate script

* fix case syntax

* fix typo

* rename assets to replace installer

* Add issue template for install problems

* Add link to open issue

* Update linked file

contrib/installer/src/root_command.sh

@@ -0,0 +1,103 @@
+# Settings
+source_url=${args[source]}
+publisher=${args[publisher]}
+# Flags
+no_call=${args[--no-call]}
+dry_run=${args[--dry-run]}
+
+REQS="wget apt-transport-https"
+
+function do_call() {
+    if [[ $dry_run ]]; then
+        echo -e "### DRY RUN: \n$1"
+    else
+        $1
+    fi
+}
+
+function get_distribution {
+    if [ -f /etc/os-release ]; then
+        . /etc/os-release
+        OS=$NAME
+        VER=$VERSION_ID
+    elif type lsb_release >/dev/null 2>&1; then
+        OS=$(lsb_release -si)
+        VER=$(lsb_release -sr)
+    elif [ -f /etc/lsb-release ]; then
+        . /etc/lsb-release
+        OS=$DISTRIB_ID
+        VER=$DISTRIB_RELEASE
+    elif [ -f /etc/debian_version ]; then
+        OS=Debian
+        VER=$(cat /etc/debian_version)
+    elif [ -f /etc/SuSe-release ]; then
+        OS=SEL
+    elif [ -f /etc/redhat-release ]; then
+        OS=RedHat
+    else
+        OS=$(uname -s)
+        VER=$(uname -r)
+    fi
+}
+
+echo "### Installer for InvenTree - source: $publisher/$source_url"
+
+# Check if os and version is supported
+get_distribution
+echo "### Detected distribution: $OS $VER"
+NOT_SUPPORTED=false
+case "$OS" in
+    Ubuntu)
+        if [[ $VER != "20.04" ]]; then
+            NOT_SUPPORTED=true
+        fi
+        ;;
+    Debian | Raspbian)
+        if [[ $VER != "11" ]]; then
+            NOT_SUPPORTED=true
+        fi
+        ;;
+    *)
+        echo "### Distribution not supported"
+        NOT_SUPPORTED=true
+        ;;
+esac
+
+if [[ $NOT_SUPPORTED ]]; then
+    echo "This OS is currently not supported"
+    echo "please install manually using https://inventree.readthedocs.io/en/stable/start/install/"
+    echo "or check https://github.com/inventree/InvenTree/issues/3836 for packaging for your OS."
+    echo "If you think this is a bug please file an issue at"
+    echo "https://github.com/inventree/InvenTree/issues/new?template=install.yaml"
+
+    exit 1
+fi
+
+echo "### Installing required packages for download"
+for pkg in $REQS; do
+    if dpkg-query -W -f'${Status}' "$pkg" 2>/dev/null | grep -q "ok installed"; then
+        true
+    else
+        do_call "sudo apt-get -yqq install $pkg"
+    fi
+done
+
+echo "### Adding key and package source"
+# Add key
+do_call "wget -qO- https://dl.packager.io/srv/$publisher/InvenTree/key | sudo apt-key add -"
+# Add packagelist
+do_call "sudo wget -O /etc/apt/sources.list.d/inventree.list https://dl.packager.io/srv/$publisher/InvenTree/$source_url/installer/${lsb_dist}/${dist_version}.repo"
+
+echo "### Updateing package lists"
+do_call "sudo apt-get update"
+
+# Set up environment for install
+echo "### Setting installer args"
+if [[ $no_call ]]; then
+    do_call "export NO_CALL=true"
+fi
+
+echo "### Installing InvenTree"
+do_call "sudo apt-get install inventree -y"
+
+echo "### Install done!"