Docker PR pruning script

prune-prs-new.sh

#!/bin/sh

## Start Values ##

#Whether to prune volumes as well
prunevolumes=true

#Whether to prune networks as well
prunenetworks=true

#Whether to prune images after done
pruneimages=true

	## Docker Values ##
#Prefix of pr docker stack names
stackprefix=project-pr

	## Github Values ##

#Your username for github API usage
githubuser=username

#Your API key for github API usage
githubkey=apikey

#Your repo in format of: "org/repo" or "username/repo"
githubrepo=org/repo

## End Values ##


echo
datestring='---------- Pruning on '$(date)' ----------'
echo $datestring

githubapiprefix=https://api.github.com/repos/$githubrepo/pulls/
githubpullprefix=https://github.com/$githubrepo/pull/

lengthofprefix=$(($(echo -n $stackprefix | wc -c) + 1))
stacks=$(docker stack ls | grep -o -P $stackprefix.'[0-9]*' | cut -c$lengthofprefix-)
matchuntilblankspace='([^\s]+)'

delete_stack() {
	echo
	echo ----- Removing Stack: $stack -----
    docker stack rm $stackprefix$stack
	containers=$(docker ps -a | grep -o -P $stackprefix$stack$matchuntilblankspace)
	for container in $containers
	do
		docker container rm -f -v $container
	done

	if [ "$prunevolumes" = true ]
	then
		for volume in $volumes
		do
			docker volume rm $volume
		done
	fi

	if [ "$prunenetworks" = true ]
	then
		for network in $networks
		do
			docker network rm $network
		done
	fi
	echo ------------------------------
}

for stack in $stacks
do
	echo
	stackstring='-------------------- '$stackprefix$stack' --------------------'
	echo $stackstring

	echo Pull Request: $githubpullprefix$stack
	state=$(curl --user $githubuser:$githubapi $githubapiprefix$stack -s | jq -r '.state')
	echo Status: $state
	echo

	volumes=$(docker volume ls | grep -o -P $stackprefix$stack$matchuntilblankspace) # just in case it doesn't exist
	echo ----- Volumes -----
	for volume in $volumes
	do
		echo $volumes
	done
	echo -------------------

	networks=$(docker network ls | grep -o -P $stackprefix$stack$matchuntilblankspace) # just in case it doesn't exist
	echo ----- Networks -----
	for network in $networks
	do
		echo $network
	done
	echo --------------------

	services=$(docker service ls | grep -o -P $stackprefix$stack$matchuntilblankspace)
	echo ----- Services -----
	for service in $services
	do
		echo $service
	done
	echo --------------------

	if [ $state != open ]
	then
		delete_stack $stack $volumes $networks
	fi

	for i in $(seq 1 ${#stackstring})
	do
		stackendstring='-'$stackendstring
	done
	echo $stackendstring
done

if [ "$pruneimages" = true ]
then
	echo
	echo ----- Pruning Images -----
	docker image prune -f
	echo --------------------------
fi

for i in $(seq 1 ${#datestring})
do
	endstring='-'$endstring
done

echo $endstring
echo