Arjun Patel
155 lines
3.8 KiB
Bash
Executable File
155 lines
3.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Set shell options:
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# -e, exit immediately if a command exits with a non-zero status
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# -o pipefail, means that if any element of the pipeline fails, then the pipeline as a whole will fail.
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# -u, treat unset variables as an error when substituting.
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set -e
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set -u
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set -o pipefail
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DONT_RESTART_DOCKER_ENGINE=0
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DONT_ASK_CONFIRMATION=0
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while [[ $# -gt 0 ]]; do
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key="$1"
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case $key in
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--no-restart)
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DONT_RESTART_DOCKER_ENGINE=1
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shift
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;;
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-y)
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DONT_ASK_CONFIRMATION=1
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shift
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;;
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*)
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echo "Unknown parameter passed: $1";
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exit 1;
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;;
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esac
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done
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# Asks user for confirmation interactively
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ask_user_for_confirmation () {
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cat << EOF
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==============================================
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This script reclaims disk space by removing stale and unused Docker data:
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> removes stopped containers
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> removes orphan (dangling) images layers
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> removes unused volumes
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> removes Docker build cache
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> shrinks the "Docker.raw" file on MacOS
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> restarts the Docker engine
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> prints Docker disk usage
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==============================================
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EOF
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if [ $DONT_ASK_CONFIRMATION -eq 1 ]; then
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return
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fi
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read -p "Would you like to proceed (y/n)? " confirmation
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# Stop if answer is anything but "Y" or "y"
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if [ "$confirmation" == "${confirmation#[Yy]}" ]; then
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exit 1;
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fi
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}
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# On MacOS, restarting Docker Desktop for Mac might take a long time
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poll_for_docker_readiness() {
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# TODO: add new line at the end of polling
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printf 'Waiting for docker engine to start:\n'
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local i=0
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while ! docker system info > /dev/null 2>&1;
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do
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printf '.%.0s' {1..$i}
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i=$((i + 1))
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sleep 1
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tput el
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done
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printf '\n'
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}
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# Checks if a particular program is installed
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is_program_installed () {
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command -v "$1" &>/dev/null
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}
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# Restarts the Docker engine
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restart_docker_engine () {
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if [ $DONT_RESTART_DOCKER_ENGINE -eq 1 ]; then
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return
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fi
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echo "👉 Restarting Docker engine"
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# On MacOS, restart through "launchd"
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if [ "$(uname)" == "Darwin" ] && is_program_installed "launchctl"; then
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local docker_service=$(launchctl list | grep "com.docker.docker" | awk '$0 != "-" { print $3 }')
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if [ -n "$docker_service" ]; then
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launchctl stop "$docker_service" || true;
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fi
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launchctl start com.docker.helper
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sleep 1
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poll_for_docker_readiness
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# On Linux, restart through "systemd"
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elif [ "$(uname)" == "Linux" ] && is_program_installed "systemctl"; then
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sudo systemctl stop docker.service || true
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sudo systemctl start docker.service
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# Other platforms are not supported
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else
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printf "Platform type $(uname) is not supported\n" >&2
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fi
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}
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echo "👉 Docker disk usage"
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docker system df
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ask_user_for_confirmation
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echo "👉 Remove all stopped containers"
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docker ps --filter "status=exited" -q | xargs -r docker rm --force
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echo "👉 Remove all orphan image layers"
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docker images -f "dangling=true" -q | xargs -r docker rmi -f
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echo "👉 Remove all unused volumes"
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docker volume ls -qf dangling=true | xargs -r docker volume rm
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echo "👉 Remove Docker builder cache"
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DOCKER_BUILDKIT=1 docker builder prune --all --force
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echo "👉 Remove docker builder cache"
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echo "👉 Remove networks not used by at least one container"
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docker network prune --force
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# echo "👉 Remove unused volumes"
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# -a, --all, Remove all unused build cache, not just dangling ones
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# docker system prune --force --volumes
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# Run "docker/docker-reclaim-space" only on Intel chips
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# because image is not build for ARM achitecture (Apple M1 chips)
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if [ "$(uname)" == "Darwin" ] && [ "$(uname -m)" == "x86_64" ]; then
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echo "👉 Shrink the Docker.raw file"
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docker run --privileged --pid=host docker/desktop-reclaim-space
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fi
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echo "👉 Docker disk usage (after cleanup)"
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docker system df
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restart_docker_engine
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echo "🤘 Done"
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