pirate/docker-compose-backup.sh

## docker-compose-backup.sh
#!/usr/bin/env bash

### Bash Environment Setup
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
# https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html
# set -o xtrace
set -o errexit
set -o errtrace
set -o nounset
set -o pipefail
IFS=$'\n'

# Fully backup a docker-compose project, including all images, named and unnamed volumes, container filesystems, config, logs, and databases.
project_dir="${1:-$PWD}"
if [ -f "$project_dir/docker-compose.yml" ]; then
    echo "[i] Found docker-compose config at $project_dir/docker-compose.yml"
else
    echo "[X] Could not find a docker-compose.yml file in $project_dir"
    exit 1
fi

project_name=$(basename "$project_dir")
backup_time=$(date +"%Y-%m-%d_%H-%M")
backup_dir="$project_dir/data/backups/$backup_time"

# Source any needed environment variables
[ -f "$project_dir/docker-compose.env" ] && source "$project_dir/docker-compose.env"
[ -f "$project_dir/.env" ] && source "$project_dir/.env"


echo "[+] Backing up $project_name project to $backup_dir"
mkdir -p "$backup_dir"

echo "    - Saving docker-compose.yml config"
cp "$project_dir/docker-compose.yml" "$backup_dir/docker-compose.yml"

# Optional: pause the containers before backing up to ensure consistency
# docker compose pause

# Optional: run a command inside the contianer to dump your application's state/database to a stable file
echo "    - Saving application state to ./dumps"
mkdir -p "$backup_dir/dumps"
# your database/stateful service export commands to run inside docker go here, e.g.
#   docker compose exec postgres env PGPASSWORD="$POSTGRES_PASSWORD" pg_dump -U "$POSTGRES_USER" "$POSTGRES_DB" | gzip -9 > "$backup_dir/dumps/$POSTGRES_DB.sql.gz"
#   docker compose exec redis redis-cli SAVE
#   docker compose exec redis cat /data/dump.rdb | gzip -9 > "$backup_dir/dumps/redis.rdb.gz"

for service_name in $(docker compose config --services); do
    image_id=$(docker compose images -q "$service_name")
    image_name=$(docker image inspect --format '{{json .RepoTags}}' "$image_id" | jq -r '.[0]')
    container_id=$(docker compose ps -q "$service_name")

    service_dir="$backup_dir/$service_name"
    echo "[*] Backing up ${project_name}__${service_name} to ./$service_name..."
    mkdir -p "$service_dir"

    # save image
    echo "    - Saving $image_name image to ./$service_name/image.tar"
    docker save --output "$service_dir/image.tar" "$image_id"

    if [[ -z "$container_id" ]]; then
        echo "    - Warning: $service_name has no container yet."
        echo "         (has it been started at least once?)"
        continue
    fi

    # save config
    echo "    - Saving container config to ./$service_name/config.json"
    docker inspect "$container_id" > "$service_dir/config.json"

    # save logs
    echo "    - Saving stdout/stderr logs to ./$service_name/docker.{out,err}"
    docker logs "$container_id" > "$service_dir/docker.out" 2> "$service_dir/docker.err"

    # save data volumes
    mkdir -p "$service_dir/volumes"
    for source in $(docker inspect -f '{{range .Mounts}}{{println .Source}}{{end}}' "$container_id"); do
        volume_dir="$service_dir/volumes$source"
        echo "    - Saving $source volume to ./$service_name/volumes$source"
        mkdir -p $(dirname "$volume_dir")
        cp -a -r "$source" "$volume_dir"
    done

    # save container filesystem
    echo "    - Saving container filesystem to ./$service_name/container.tar"
    docker export --output "$service_dir/container.tar" "$container_id"

    # save entire container root dir
    echo "    - Saving container root to $service_dir/root"
    cp -a -r "/var/lib/docker/containers/$container_id" "$service_dir/root"
done

echo "[*] Compressing backup folder to $backup_dir.tar.gz"
tar -zcf "$backup_dir.tar.gz" --totals "$backup_dir" && rm -Rf "$backup_dir"

echo "[√] Finished Backing up $project_name to $backup_dir.tar.gz."

# Resume the containers if paused above
# docker compose unpause
	#!/usr/bin/env bash

	### Bash Environment Setup
	# http://redsymbol.net/articles/unofficial-bash-strict-mode/
	# https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html
	# set -o xtrace
	set -o errexit
	set -o errtrace
	set -o nounset
	set -o pipefail
	IFS=$'\n'

	# Fully backup a docker-compose project, including all images, named and unnamed volumes, container filesystems, config, logs, and databases.
	project_dir="${1:-$PWD}"
	if [ -f "$project_dir/docker-compose.yml" ]; then
	echo "[i] Found docker-compose config at $project_dir/docker-compose.yml"
	else
	echo "[X] Could not find a docker-compose.yml file in $project_dir"
	exit 1
	fi

	project_name=$(basename "$project_dir")
	backup_time=$(date +"%Y-%m-%d_%H-%M")
	backup_dir="$project_dir/data/backups/$backup_time"

	# Source any needed environment variables
	[ -f "$project_dir/docker-compose.env" ] && source "$project_dir/docker-compose.env"
	[ -f "$project_dir/.env" ] && source "$project_dir/.env"


	echo "[+] Backing up $project_name project to $backup_dir"
	mkdir -p "$backup_dir"

	echo " - Saving docker-compose.yml config"
	cp "$project_dir/docker-compose.yml" "$backup_dir/docker-compose.yml"

	# Optional: pause the containers before backing up to ensure consistency
	# docker compose pause

	# Optional: run a command inside the contianer to dump your application's state/database to a stable file
	echo " - Saving application state to ./dumps"
	mkdir -p "$backup_dir/dumps"
	# your database/stateful service export commands to run inside docker go here, e.g.
	# docker compose exec postgres env PGPASSWORD="$POSTGRES_PASSWORD" pg_dump -U "$POSTGRES_USER" "$POSTGRES_DB" \| gzip -9 > "$backup_dir/dumps/$POSTGRES_DB.sql.gz"
	# docker compose exec redis redis-cli SAVE
	# docker compose exec redis cat /data/dump.rdb \| gzip -9 > "$backup_dir/dumps/redis.rdb.gz"

	for service_name in $(docker compose config --services); do
	image_id=$(docker compose images -q "$service_name")
	image_name=$(docker image inspect --format '{{json .RepoTags}}' "$image_id" \| jq -r '.[0]')
	container_id=$(docker compose ps -q "$service_name")

	service_dir="$backup_dir/$service_name"
	echo "[*] Backing up ${project_name}__${service_name} to ./$service_name..."
	mkdir -p "$service_dir"

	# save image
	echo " - Saving $image_name image to ./$service_name/image.tar"
	docker save --output "$service_dir/image.tar" "$image_id"

	if [[ -z "$container_id" ]]; then
	echo " - Warning: $service_name has no container yet."
	echo " (has it been started at least once?)"
	continue
	fi

	# save config
	echo " - Saving container config to ./$service_name/config.json"
	docker inspect "$container_id" > "$service_dir/config.json"

	# save logs
	echo " - Saving stdout/stderr logs to ./$service_name/docker.{out,err}"
	docker logs "$container_id" > "$service_dir/docker.out" 2> "$service_dir/docker.err"

	# save data volumes
	mkdir -p "$service_dir/volumes"
	for source in $(docker inspect -f '{{range .Mounts}}{{println .Source}}{{end}}' "$container_id"); do
	volume_dir="$service_dir/volumes$source"
	echo " - Saving $source volume to ./$service_name/volumes$source"
	mkdir -p $(dirname "$volume_dir")
	cp -a -r "$source" "$volume_dir"
	done

	# save container filesystem
	echo " - Saving container filesystem to ./$service_name/container.tar"
	docker export --output "$service_dir/container.tar" "$container_id"

	# save entire container root dir
	echo " - Saving container root to $service_dir/root"
	cp -a -r "/var/lib/docker/containers/$container_id" "$service_dir/root"
	done

	echo "[*] Compressing backup folder to $backup_dir.tar.gz"
	tar -zcf "$backup_dir.tar.gz" --totals "$backup_dir" && rm -Rf "$backup_dir"

	echo "[√] Finished Backing up $project_name to $backup_dir.tar.gz."

	# Resume the containers if paused above
	# docker compose unpause