debian-aci-creator.sh

#!/bin/sh
set -e

# create ACI with trusty without actool due to bug https://github.com/coreos/rocket/issues/198
# https://gist.github.com/brosner/dbc092e3024f6a80149b

# $ ./debian-aci-creator.sh
# $ cd /var/lib/container/aci
# $ zcat debian.aci | tree | head
# $ rkt run debian.aci --insecure-options=image --interactive --exec=/bin/bash

export MY_CHROOT=/var/lib/container/aci/debian

mkdir -p $MY_CHROOT
cd $MY_CHROOT

debootstrap --arch=amd64 --include=iputils-ping,iproute --variant=minbase stable rootfs http://httpredir.debian.org/debian

cat > manifest <<EOF
{
  "acKind": "ImageManifest",
  "acVersion": "0.8.9",
  "name": "debian",
  "labels": [
    {"name": "arch", "value": "amd64"},
    {"name": "os", "value": "linux"},
    {"name": "version", "value": "1.0.0"}
  ],
  "app": {
    "exec": [
      "/bin/sh",
      "echo",
      "Hello, World from \$MY_ENV_VAR!"
    ],
    "user": "0",
    "group": "0",
    "workingDirectory": "/mnt",
    "environment": [
      {
        "name": "MY_ENV_VAR",
        "value": "\$(whoami)"
      }
    ],
    "ports": [
      {
        "name": "http",
        "port": 80,
        "protocol": "tcp",
        "socketActivated": true
      }
    ]
  },
  "annotations": [
    {
      "name": "authors",
      "value": "Istvan Lantos <kerozin.joe@gmail.com>"
    }
  ]
}
EOF

tar cvf - manifest rootfs | gzip -c > debian.aci