Add ALT Linux example

Signed-off-by: Mikhail Gordeev <obirvalger@altlinux.org>

doc/examples/alt

@@ -0,0 +1,75 @@
+image:
+  distribution: ALT Linux
+  release: Sisyphus
+  description: ALT Linux {{ image.release }}
+  expiry: 30d
+  architecture: x86_64
+
+source:
+  downloader: alt-http
+  url: http://ftp.altlinux.org
+  keyserver: keyserver.ubuntu.com
+  keys:
+    - 0x17F112840DE94827C9C109FD3E2B30EA57EF33CE
+
+targets:
+  lxc:
+    create-message: |
+      You just created an {{ image.distribution }} container (release={{ image.release }}, arch={{ image.architecture }})
+
+    config:
+      - type: all
+        before: 5
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/alt.common.conf
+
+      - type: user
+        before: 5
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/alt.userns.conf
+
+      - type: all
+        after: 4
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/common.conf
+
+      - type: user
+        after: 4
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/userns.conf
+
+      - type: all
+        content: |-
+          lxc.arch = {{ image.architecture_kernel }}
+
+files:
+  - path: /etc/hostname
+    generator: hostname
+
+  - path: /etc/hosts
+    generator: hosts
+
+  - path: /etc/systemd/network/eth0.network
+    generator: dump
+    content: |-
+      [Match]
+      Name=eth0
+
+      [Network]
+      DHCP=ipv4
+
+packages:
+  manager: apt_rpm
+
+  update: true
+  cleanup: true
+
+  sets:
+    - packages:
+        - vim-console
+      action: install
+
+environment:
+  variables:
+    - key: HOME
+      value: /root