A deploy script that can look at old versions of code in Git

deploy.sh

#!/bin/bash

function deploy() {
    echo "Deploying tag: $1"

    # create a working folder
    mkdir -p "$DEPLOY_DIR/$1"
        
    # dump code to this new folder
    git archive $(cat .git/refs/tags/$1):src 2>/dev/null | \ 
        tar -x -C "$DEPLOY_DIR/$1" 2>/dev/null
}

set +e

DEPLOY_DIR=www

# clean up old stuff
rm -Rf "$DEPLOY_DIR/*"

deploy "HEAD"
for tag in $(git tag); do
    deploy $tag
done