Finding the layers and layer sizes for each Docker image

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You can find the layers of the images in the folder /var/lib/docker/aufs/layers; provide if you configured for storage-driver as aufs (default option)

Example:

 docker ps -a CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                      PORTS               NAMES 0ca502fa6aae        ubuntu              "/bin/bash"         44 minutes ago      Exited (0) 44 seconds ago                       DockerTest

Now to view the layers of the containers that were created with the image "Ubuntu"; go to /var/lib/docker/aufs/layers directory and cat the file starts with the container ID (here it is 0ca502fa6aae*)

 root@viswesn-vm2:/var/lib/docker/aufs/layers# cat    0ca502fa6aaefc89f690736609b54b2f0fdebfe8452902ca383020e3b0d266f9-init  d2a0ecffe6fa4ef3de9646a75cc629bbd9da7eead7f767cb810f9808d6b3ecb6 29460ac934423a55802fcad24856827050697b4a9f33550bd93c82762fb6db8f b670fb0c7ecd3d2c401fbfd1fa4d7a872fbada0a4b8c2516d0be18911c6b25d6 83e4dde6b9cfddf46b75a07ec8d65ad87a748b98cf27de7d5b3298c1f3455ae4

This will show the result of same by running

root@viswesn-vm2:/var/lib/docker/aufs/layers# docker history ubuntuIMAGE               CREATED             CREATED BY                                         SIZE                COMMENTd2a0ecffe6fa        13 days ago         /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B                 29460ac93442        13 days ago         /bin/sh -c sed -i 's/^#\s*\   (deb.*universe\)$/   1.895 kB            b670fb0c7ecd        13 days ago         /bin/sh -c echo '#!/bin/sh' > /usr/sbin/polic   194.5 kB            83e4dde6b9cf        13 days ago         /bin/sh -c #(nop) ADD file:c8f078961a543cdefa   188.2 MB 

To view the full layer ID; run with --no-trunc option as part of history command.

docker history --no-trunc ubuntu

You can first find the image ID using:

$ docker images -a

Then find the image's layers and their sizes:

$ docker history --no-trunc <Image ID>

Note: I'm using Docker version 1.13.1

$ docker -vDocker version 1.13.1, build 092cba3