Detect architecture of host machine for LXC images

Tested for amd64/x86_64 and arm64/aarch64

create_inventory_lxc.yml

@@ -17,6 +17,14 @@
     #service_password: {{ service_username }}
     #service_ssh_keys: {{ ssh_keys }}
 
+    # architecture mapping from "uname -m" to package
+    architecture_mapping:
+      aarch64: arm64
+      x86_64: amd64
+      #ppc64le: ppc64el
+      #s390x: s390x
+      #armv7l: armhf
+
     # "*cmdline_" must be listed AFTER "^cmdline_"!
     cmdline_python:
       alpine:
@@ -96,12 +104,19 @@
       delegate_to: "{{ ansible_host|default('localhost') }}"
 
 
+    - name: Get architecture
+      shell: "uname -m || true"
+      changed_when: false
+      register: lxc_host_arch_native
+      delegate_to: "{{ ansible_host|default('localhost') }}"
+
+
     - name: Create LXContainer
       lxc_container:
         name: "{{ inventory_hostname }}"
         state: started
         template: download
-        template_options: "-a amd64 -d {{ os_d }} -r {{ os_r }} {% if 'no-validate' in lxc_download_validate.stdout %}--no-validate{% endif %}"
+        template_options: "-a {{ architecture_mapping[lxc_host_arch_native.stdout] }} -d {{ os_d }} -r {{ os_r }} {% if 'no-validate' in lxc_download_validate.stdout %}--no-validate{% endif %}"
         config: "{{ lxc_config_file|default('/etc/lxc/ansible.conf') }}"
         container_config:
           - "lxc.group = {{ os_d }}"