doc: Add openSUSE

Signed-off-by: Thomas Hipp <thomas.hipp@canonical.com>

doc/examples/opensuse

@@ -0,0 +1,67 @@
+image:
+  distribution: openSUSE
+  release: 15.0
+  description: openSUSE Leap {{ image.release }}
+  expiry: 30d
+  architecture: x86_64
+
+source:
+  downloader: opensuse-http
+  url: https://download.opensuse.org
+  keyserver: keyserver.ubuntu.com
+  keys:
+    - 0xA193FBB572174FC2
+
+targets:
+  lxc:
+    create-message: |
+      You just created an openSUSE Leap container (release={{ image.release }}, arch={{ image.architecture }})
+
+    config:
+      - type: all
+        before: 5
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/opensuse.common.conf
+
+      - type: user
+        before: 5
+        content: |-
+          lxc.include = LXC_TEMPLATE_CONFIG/opensuse.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
+
+packages:
+  manager: zypper
+
+  update: true
+  cleanup: true
+
+  sets:
+    - packages:
+        - systemd
+        - neovim
+      action: install
+
+environment:
+  variables:
+    - key: HOME
+      value: /root