Add MongoDB 4.2 to linux images (#591)

* Add MongoDB 4.2 to linux images

* use the same installation script for all versions

* Add helpers to get Ubuntu version

* Improve helper functions

* Rename install.sh to os.sh

Co-authored-by: Sergey Dolin <v-sedoli@micorosoft.com>

images/linux/scripts/helpers/os.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+################################################################################
+##  File:  install-helpers.sh
+##  Desc:  Helper functions for installing tools
+################################################################################
+
+function isUbuntu16
+{
+    lsb_release -d|grep 'Ubuntu 16' > /dev/null
+}
+
+function isUbuntu18
+{
+    lsb_release -d|grep 'Ubuntu 18' > /dev/null
+}
+
+function getOSVersionLabel
+{
+    isUbuntu16 && echo xenial || echo bionic
+}

images/linux/scripts/installers/mongodb.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+################################################################################
+##  File:  homebrew.sh
+##  Desc:  Installs Mongo DB
+################################################################################
+
+# Source the helpers
+source $HELPER_SCRIPTS/os.sh
+source $HELPER_SCRIPTS/document.sh
+
+#  Install Mongo DB
+wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add -
+version=$(getOSVersionLabel)
+echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu $version/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list
+sudo apt-get update
+sudo apt-get install -y mongodb-org
+
+# Validate the installation
+echo "Validate the installation"
+if ! command -v mongod; then
+    echo "mongodb was not installed"
+    exit 1
+fi
+
+# Document the installed version
+echo "Document the installed version"
+DocumentInstalledItem "MongoDB on Linux ($(mongod -v|grep -i version 2>&1))"

images/linux/ubuntu1604.json

@@ -187,7 +187,8 @@
                 "{{template_dir}}/scripts/installers/vcpkg.sh",
                 "{{template_dir}}/scripts/installers/zeit-now.sh",
                 "{{template_dir}}/scripts/installers/updatepath.sh",
-                "{{template_dir}}/scripts/installers/dpkg-config.sh"
+                "{{template_dir}}/scripts/installers/dpkg-config.sh",
+                "{{template_dir}}/scripts/installers/mongodb.sh"
 
             ],
             "environment_vars": [

images/linux/ubuntu1804.json

@@ -190,7 +190,8 @@
                 "{{template_dir}}/scripts/installers/vcpkg.sh",
                 "{{template_dir}}/scripts/installers/zeit-now.sh",
                 "{{template_dir}}/scripts/installers/updatepath.sh",
-                "{{template_dir}}/scripts/installers/dpkg-config.sh"
+                "{{template_dir}}/scripts/installers/dpkg-config.sh",
+                "{{template_dir}}/scripts/installers/mongodb.sh"
             ],
             "environment_vars": [
                 "METADATA_FILE={{user `metadata_file`}}",