output.log

x27[1;32mdocker output will be in this color.x27[0m

x27[1;32m==> docker: Creating a temporary directory for sharing data...x27[0m
x27[1;32m==> docker: Pulling Docker image: ubuntux27[0m
x27[0;32m    docker: Using default tag: latestx27[0m
x27[0;32m    docker: latest: Pulling from library/ubuntux27[0m
x27[0;32m    docker: d3a1f33e8a5a: Already existsx27[0m
x27[0;32m    docker: c22013c84729: Already existsx27[0m
x27[0;32m    docker: d74508fb6632: Already existsx27[0m
x27[0;32m    docker: 91e54dfb1179: Already existsx27[0m
x27[0;32m    docker: Digest: sha256:73fbe2308f5f5cb6e343425831b8ab44f10bbd77070ecdfbe4081daa4dbe3ed1x27[0m
x27[0;32m    docker: Status: Image is up to date for ubuntu:latestx27[0m
x27[1;32m==> docker: Starting docker container...x27[0m
x27[0;32m    docker: Run command: docker run -v /tmp/packer-docker608492992:/packer-files -d -i -t ubuntu /bin/bashx27[0m
x27[0;32m    docker: Container ID: 771e58e046b8c49a729536288867b70115cef43cef2436bf3c9dbe0a02e09531x27[0m
x27[1;32m==> docker: Provisioning with shell script: /tmp/packer-shell612462822x27[0m
x27[0;32m    docker: 1+0 records inx27[0m
x27[0;32m    docker: 1+0 records outx27[0m
x27[0;32m    docker: 1048576 bytes (1.0 MB) copied, 0.0606442 s, 17.3 MB/sx27[0m
x27[0;32m    docker: 100+0 records inx27[0m
x27[0;32m    docker: 100+0 records outx27[0m
x27[0;32m    docker: 104857600 bytes (105 MB) copied, 6.29646 s, 16.7 MB/sx27[0m
x27[0;32m    docker: e385a076fe33a224cc5c7ec6a4f53fd7  /tmp/smallx27[0m
x27[0;32m    docker: 25792ca17b421631468ed684a8e4b9c9  /tmp/bigx27[0m
x27[1;32m==> docker: Downloading /tmp/small => smallx27[0m
x27[1;32m==> docker: Downloading /tmp/big => bigx27[0m
x27[1;32m==> docker: Executing local command: md5sum small bigx27[0m
x27[0;32m    docker: e385a076fe33a224cc5c7ec6a4f53fd7  smallx27[0m
x27[0;32m    docker: ea050f649daf0ae895af438a6f8f06b1  bigx27[0m
x27[1;32m==> docker: Committing the containerx27[0m
x27[0;32m    docker: Image ID: 44e4e83b1552ba880d840d3941335358a99da514f6398d50edc3cbce8cc09defx27[0m
x27[1;32m==> docker: Killing the container: 771e58e046b8c49a729536288867b70115cef43cef2436bf3c9dbe0a02e09531x27[0m
x27[1;32mBuild 'docker' finished.x27[0m

==> Builds finished. The artifacts of successful builds are:
--> docker: Imported Docker image: 44e4e83b1552ba880d840d3941335358a99da514f6398d50edc3cbce8cc09def

packer.json

{
  "builders": [
    {
      "type": "docker",
      "image": "ubuntu",
      "commit": true
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "dd if=/dev/urandom of=/tmp/small bs=1M count=1",
        "dd if=/dev/urandom of=/tmp/big bs=1M count=100",
        "sync",
        "md5sum /tmp/small /tmp/big"
      ]
    },
    {
      "type": "file",
      "source": "/tmp/small",
      "destination": "small",
      "direction": "download"
    },
    {
      "type": "file",
      "source": "/tmp/big",
      "destination": "big",
      "direction": "download"
    },
    {
      "type": "shell-local",
      "command": "md5sum small big"
    }
  ]
}