dload

#!/usr/bin/env bash
#
# Docker Load Images
# To untar a tar file of other files, use tar -xf "archive" -C "outdir"
#
# Load all Docker image tarballs from the current directory into Docker. Uses parallel processing with background jobs.
set -euo pipefail

# Kill all child jobs on Ctrl+C
trap 'echo "Interrupted. Killing all jobs..."; kill 0; exit 1' SIGINT

EXTRACT_DIR="."

mapfile -t TARFILES < <(find "$EXTRACT_DIR" -maxdepth 1 -name '*.tar')

if [[ ${#TARFILES[@]} -eq 0 ]]; then
  echo "No .tar files found to load."
  exit 1
fi

echo "Found ${#TARFILES[@]} image tarballs. Loading in parallel..."

load_image() {
  local tarfile="$1"
  echo "Loading image from $tarfile"
  docker load -i "$tarfile"
}

# Start all jobs in background
for tar in "${TARFILES[@]}"; do
  load_image "$tar" &
done

# Wait for all background jobs to complete
wait

echo "All images loaded successfully!"