A Dockerfile contains the statements:COPY data/ /data/VOLUME /dataWhat happens when the resulting container is started...

When a Docker container is started and the Dockerfile contains both COPY and VOLUME instructions as follows:

COPY data/ /data/

VOLUME /data

C. Existing files from /data/ in the image are copied to the new volume: Docker will copy the contents of /data in the image into the volume when the container is started. This ensures that the initial state of the volume includes the files that were copied into /data during the build process.

E. A new volume is created and mounted to /data/ within the new container: Docker creates a new volume if none is specified and mounts it to /data in the container. This volume persists data outside the container's lifecycle.

The other options are incorrect:

A: Files in /data/ in the image are made available in the running container via the volume.

B: Changes to files within /data/ do not affect the Docker image; they only affect the volume.

D: Docker does not raise an error when mounting a volume to a directory that already contains data.

References:

Docker Documentation - Managing Data in Containers