Use remote images to warm the cache
Image layers will be downloaded as needed
Same syntax using --cache-from
Cache information must be embedded during build
Docker 19.03
–
Build image with cache information:
export DOCKER_BUILDKIT=1
docker build \
--tag localhost:5000/test:1 \
--build-arg BUILDKIT_INLINE_CACHE=1 \
.
docker push localhost:5000/test:1
Build with remote cache:
docker system prune --all
docker build \
--cache-from localhost:5000/test:1 \
.
–
Check manifest for cache information:
curl --silent \
-H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
localhost:5000/v2/test/manifests/1 \
| jq --raw-output '.config.digest' \
| while read CONFIG_DIGEST; do \
curl --silent \
-H "Accept: application/vnd.docker.container.image.v1+json" \
localhost:5000/v2/test/blobs/${CONFIG_DIGEST} \
| jq --raw-output '."moby.buildkit.cache.v0"' \
| base64 -d \
| jq; \
done