dockcheck/dockcheck.sh
mag37 9efbca8bb1
minor edits
safer code, encapsulation etc.
2023-01-18 19:13:45 +01:00

69 lines
2.1 KiB
Bash

#!/bin/bash
### Check arch:
case "$(uname --machine)" in
x86_64|amd64)
architecture="amd64";;
arm64|aarch64)
architecture="arm64";;
*) echo "Architecture not supported, exiting." ; exit ;;
esac
### Check if required application exists in PATH or directory:
if [[ $(builtin type -P "regctl") ]]; then
regbin="regctl"
elif [[ -f "./regctl" ]]; then
regbin="./regctl"
else
printf "Required dependency 'regctl' missing, do you want it downloaded? y/[n]\n"
read GetDep
if [ "$GetDep" != "${GetDep#[Yy]}" ]; then
curl -L https://github.com/regclient/regclient/releases/latest/download/regctl-linux-$architecture >./regctl
chmod 755 ./regctl
regbin="./regctl"
else
printf "Dependency missing, quitting.\n"
exit
fi
fi
### Check the image-hash of every running container VS the registry
for i in $(docker ps --format '{{.Names}}')
do
printf ". "
RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}' | sed -e 's/.*sha256/sha256/' -e 's/\]$//')
RegHash=$($regbin image digest --list "$RepoUrl")
if [[ "$LocalHash" != "$RegHash" ]] ; then
GotUpdates+=("$i")
else
NoUpdates+=("$i")
fi
done
### List what containers got updates or not
if [ -n "$GotUpdates" ] ; then
printf "\n\033[31;1mContainers with updates available:\033[0m\n"
printf "%s\n" "${GotUpdates[@]}"
fi
if [ -n "$NoUpdates" ] ; then
printf "\n\033[32;1mContainers on latest version:\033[0m\n"
printf "%s\n" "${NoUpdates[@]}"
fi
### Optionally get updates
printf "\n\033[36;1mDo you want to update? y/[n]\033[0m\n"
read UpdYes
if [ "$UpdYes" != "${UpdYes#[Yy]}" ] ; then
for i in "${GotUpdates[@]}"
do
# Check what compose-type is installed:
if docker compose &> /dev/null ; then DockerBin="docker compose" ; else DockerBin="docker-compose" ; fi
ContPath=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.working_dir"}}')
$DockerBin -f "$ContPath/docker-compose.yml" pull
$DockerBin -f "$ContPath/docker-compose.yml" up -d
done
else
printf "\nNo updates installed, exiting.\n"
fi