Custom Build Output
I needed to build some binaries inside
Dockerfile and copy the artifacts built inside the image to the host machine.
After some digging in, found
buildx supports Custom Build Outputs
Here's an example workflow on how to achieve the same:
FROM ubuntu:22.04 AS base RUN mkdir -p /data RUN touch /data/hello.txt # Export the data to host using buildx FROM scratch AS export COPY --from=base /data .
docker buildx build --file Dockerfile --output data .
After the above command builds the image, you can see
./data got created in our host machine.
. ├── Dockerfile └── data └── hello.txt