container: Support static ip for container

roles/container/defaults/main.yaml

@@ -4,6 +4,7 @@ container_user: ""
 container_mounts: []
 container_publish_ports: []
 container_networks: []
+container_ip: ""
 container_secrets: []
 container_env: {}
 container_auto_start: true

roles/container/meta/argument_specs.yaml

@@ -115,6 +115,11 @@ argument_specs:
         required: false
         default: []
         elements: str
+      container_ip:
+        description: IPv4 address for the container in the first network defined in container_networks
+        type: str
+        required: false
+        default: ""
       container_secrets:
         description: A list of secrets available to the container as file or environment variable
         type: list

roles/container/tasks/main.yaml

@@ -15,10 +15,16 @@
     name: network
   vars:
     network_name: "{{ network }}"
+    network_subnet: >-
+      {{
+        container_ip | ansible.utils.ipsubnet(24)
+        if (container_ip | length > 0 and network_index == 0) else ''
+      }}
   when: network_created_networks is not defined or network not in network_created_networks
   loop: "{{ container_networks }}"
   loop_control:
     loop_var: network
+    index_var: network_index
 
 - name: Create volumes for container {{ container_name }}
   ansible.builtin.include_role:
@@ -45,7 +51,7 @@
     command: "{{ container_command or omit }}"
     user: "{{ container_user or omit }}"
     mount: "{{ _container_mounts | map('items') | map('map', 'join', '=') | map('join', ',') }}"
-    network: "{{ container_networks | map('regex_replace', '$', '.network') }}"
+    network: "{{ _container_networks_with_ip }}"
     publish: "{{ container_publish_ports }}"
     secrets: "{{ _container_secrets }}"
     env: "{{ container_env }}"

roles/container/vars/main.yaml

@@ -1,6 +1,17 @@
 ---
 _container_image: "{{ container_image | replace('/', '_') ~ '.image' }}"
 
+_container_networks: "{{ container_networks | map('regex_replace', '$', '.network') }}"
+_container_networks_with_ip: >-
+  {{
+    [
+      _container_networks[0] ~ (
+        ':ip=' ~ container_ip if container_ip | length > 0 else ''
+      )
+    ]
+    + _container_networks[1:]
+  }}
+
 _container_volumes: "{{ container_mounts | selectattr('type', '==', 'volume') }}"
 
 _container_mount_sources: "{{ container_mounts | map(attribute='source') }}"