File size: 1,740 Bytes
9a069e7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #!/usr/bin/env bash
set -eo pipefail
SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
DOCKER_IMAGE_TAG="segment-algorithm"
echo "=+= (Re)build the container"
source "${SCRIPT_DIR}/do_build.sh"
build_timestamp=$( docker inspect --format='{{ .Created }}' "$DOCKER_IMAGE_TAG")
if [ -z "$build_timestamp" ]; then
echo "Error: Failed to retrieve build information for container $DOCKER_IMAGE_TAG"
exit 1
fi
formatted_build_info=$(echo $build_timestamp | sed -E 's/(.*)T(.*)\..*Z/\1_\2/' | sed 's/[-,:]/-/g')
output_filename="${SCRIPT_DIR}/${DOCKER_IMAGE_TAG}_${formatted_build_info}.tar.gz"
echo "==+=="
echo "Saving the container image as ${output_filename}. This can take a while."
echo ""
# Use pigz (parallel gzip) if available — much faster than gzip on a large image.
if command -v pigz >/dev/null 2>&1; then
compressor=(pigz -c)
else
compressor=(gzip -c)
fi
# Show a progress bar with pv if available, sized by the image's uncompressed size.
image_size=$(docker image inspect "$DOCKER_IMAGE_TAG" --format '{{.Size}}' 2>/dev/null || true)
if command -v pv >/dev/null 2>&1; then
if [[ "$image_size" =~ ^[0-9]+$ && "$image_size" -gt 0 ]]; then
docker save "$DOCKER_IMAGE_TAG" \
| pv --size "$image_size" --progress --timer --eta --rate --bytes \
| "${compressor[@]}" > "$output_filename"
else
docker save "$DOCKER_IMAGE_TAG" | pv --timer --rate --bytes | "${compressor[@]}" > "$output_filename"
fi
else
echo "Tip: install 'pv' (e.g. sudo apt-get install pv) for a progress bar."
docker save "$DOCKER_IMAGE_TAG" | "${compressor[@]}" > "$output_filename"
fi
echo "Container image saved as ${output_filename}"
echo "==+=="
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