Laravel remote server deployment script

post-receive

#!/bin/bash

TARGET="/var/www/pninim"
GIT_DIR="/home/<username>/repo/pninim.git"
BRANCH="master"

SLACK_POST_URL="https://hooks.slack.com/services/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"

while read oldrev newrev ref
do
        # only checking out the master (or whatever branch you would like to deploy)
        if [ "$ref" = "refs/heads/$BRANCH" ];
        then

                cd $TARGET
                pwd

                echo "activating maintenance mode"
                php artisan down

                echo "Ref $ref received. Deploying ${BRANCH} branch to production..."
                git --work-tree=$TARGET --git-dir=$GIT_DIR checkout -f $BRANCH

                echo "Running NPM build command"
                npm install
                npm run build

                echo "running composer install"
                composer install --no-interaction --no-dev --prefer-dist

                echo "running migrations"
                php artisan migrate --force

                echo "going back live..."
                php artisan up

                curl -X POST --data-urlencode "payload={'channel': '#deployments', 'username': 'yiddishe-bot', 'text': 'Successfully deployed to <http://pninim.yiddishe-kop.com/|Pninim>!', 'icon_emoji': ':yiddishe-kop:'}" $SLACK_POST_URL

        else
                echo "Ref $ref received. Doing nothing: only the ${BRANCH} branch may be deployed on this server."
        fi
done