Add automated install-update script for Linux

scripts/install_update_linux.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+GITHUB_LATEST_VERSION=$(curl -L -s -H 'Accept: application/json' https://github.com/jesseduffield/lazydocker/releases/latest | sed -e 's/.*"tag_name":"\([^"]*\)".*/\1/')
+GITHUB_FILE="lazydocker_${GITHUB_LATEST_VERSION//v/}_$(uname -s)_$(uname -m).tar.gz"
+GITHUB_URL="https://github.com/jesseduffield/lazydocker/releases/download/${GITHUB_LATEST_VERSION}/${GITHUB_FILE}"
+
+wget -O lazydocker.tar.gz $GITHUB_URL
+tar xzvf lazydocker.tar.gz lazydocker
+sudo mv -f lazydocker /usr/local/bin/
+rm lazydocker.tar.gz