Update Gitea installation

GiteaUpdate.sh

#!/bin/bash

if [[ "$OSTYPE" != "linux-gnu"* ]]; then
  echo Only Linux is supported!
  exit
fi

arch=""
case $(uname -m) in
    i386)   arch="386" ;;
    i686)   arch="386" ;;
    x86_64) arch="amd64" ;;
    arm)    dpkg --print-architecture | grep -q "arm64" && arch="arm64" || arch="arm64" ;;
esac

if [[ $arch != "386" && $arch != "amd64" && $arch != "arm-5" && $arch != "arm-6" && $arch != "arm64" ]]; then
  echo "Architecture '$arch' is not supported!"
  exit
fi

echo Please enter Gitea version:
read version

echo
echo Updating to version $version...

systemctl stop gitea
wget -O /usr/local/bin/gitea https://dl.gitea.io/gitea/$version/gitea-$version-linux-$arch         
systemctl start gitea