Try to get tests running.

tests/integration/targets/docker_compose_v2_build/tasks/main.yml

@@ -13,6 +13,7 @@
   set_fact:
     name_prefix: "{{ 'ansible-docker-test-%0x' % ((2**32) | random) }}"
     cnames: []
+    inames: []
     dnetworks: []
 
 - debug:
@@ -41,6 +42,12 @@
       with_items: "{{ cnames }}"
       diff: false
 
+    - name: "Make sure all images are removed"
+      docker_image_remove:
+        name: "{{ item }}"
+      with_items: "{{ inames }}"
+      diff: false
+
     - name: "Make sure all networks are removed"
       docker_network:
         name: "{{ item }}"

tests/integration/targets/docker_compose_v2_build/tasks/tests/build.yml

@@ -8,31 +8,32 @@
     cname: "{{ name_prefix }}-cont"
     non_existing_image: does-not-exist:latest
     dockerfile_path: test-dockerfile
-    base_image: hello-world:latest
+    base_image: "{{ docker_test_image_hello_world }}"
+    image_name: "{{ name_prefix }}-image"
     project_src: "{{ remote_tmp_dir }}/{{ bname }}"
     test_service_non_existing: |
-      version: '3'
       services:
         {{ cname }}:
           image: {{ non_existing_image }}
           build:
             dockerfile: Dockerfile-does-not-exist
     test_service_simple: |
-      version: '3'
       services:
         {{ cname }}:
-          image: {{ docker_test_image_simple_1 }}
+          image: {{ image_name }}
           build:
             dockerfile: {{ dockerfile_path }}
           command: 10m
           stop_grace_period: 1s
     test_service_simple_dockerfile: |
       FROM {{ base_image }}
+      RUN [ "/hello" ]
 
   block:
     - name: Registering container name
       set_fact:
-        cnames: "{{ cnames + [bname ~ '-' ~ cname ~ '-1'] + [ base_image ]}}"
+        cnames: "{{ cnames + [bname ~ '-' ~ cname ~ '-1'] }}"
+        inames: "{{ inames + [ base_image, image_name ] }}"
         dnetworks: "{{ dnetworks + [bname ~ '_default'] }}"
 
     - name: Create project directory
@@ -44,9 +45,13 @@
       docker_image_remove:
         name: '{{ item }}'
       loop:
-        - '{{ base_image }}'
         - '{{ non_existing_image }}'
-        - '{{ docker_test_image_simple_1 }}'
+        - '{{ image_name }}'
+
+    - name: Prune docker build cache
+      docker_prune:
+        builder_cache: true
+        builder_cache_all: true
 
 ####################################################################
 ## Image with missing dockerfile ###################################
@@ -72,11 +77,13 @@
 
     - assert:
         that:
-          - build_1_check is failed or build_1_check is changed
-          - build_1_check is changed or build_1_check.msg.startswith('Error when processing ')
+          - build_1_check is failed
+          - >-
+            build_1_check.msg | trim == "General error: failed to solve: failed to read dockerfile: open Dockerfile-does-not-exist: no such file or directory"
           - build_1_check.warnings | default([]) | select('regex', 'Cannot parse event from ') | length == 0
           - build_1 is failed
-          - build_1.msg.startswith('Error when processing ')
+          - >-
+            build_1.msg | trim == "General error: failed to solve: failed to read dockerfile: open Dockerfile-does-not-exist: no such file or directory"
           - build_1.warnings | default([]) | select('regex', 'Cannot parse event from ') | length == 0
 
 ####################################################################
@@ -93,17 +100,48 @@
         dest: '{{ project_src }}/{{ dockerfile_path }}'
         content: '{{ test_service_simple_dockerfile }}'
 
+    - docker_image_info:
+        name: "{{ image_name }}"
+      register: pre_image
+
     - name: Build (check)
       docker_compose_v2_build:
         project_src: '{{ project_src }}'
       check_mode: true
       register: build_1_check
 
+    - docker_image_info:
+        name: "{{ image_name }}"
+      register: build_1_check_image
+
     - name: Build
       docker_compose_v2_build:
         project_src: '{{ project_src }}'
       register: build_1
 
+    - docker_image_info:
+        name: "{{ image_name }}"
+      register: build_1_image
+
+    - name: Build (idempotent, check)
+      docker_compose_v2_build:
+        project_src: '{{ project_src }}'
+      check_mode: true
+      register: build_2_check
+
+    - docker_image_info:
+        name: "{{ image_name }}"
+      register: build_2_check_image
+
+    - name: Build (idempotent)
+      docker_compose_v2_build:
+        project_src: '{{ project_src }}'
+      register: build_2
+
+    - docker_image_info:
+        name: "{{ image_name }}"
+      register: build_2_image
+
     - assert:
         that:
           - build_1_check is changed
@@ -112,3 +150,10 @@
           - build_1 is changed
           - (build_1.actions | selectattr('status', 'eq', 'Building') | first) is truthy
           - build_1.warnings | default([]) | select('regex', 'Cannot parse event from ') | length == 0
+
+          - build_2_check is not changed
+          - build_2_check.actions | selectattr('status', 'eq', 'Building') | length == 0
+          - build_2_check.warnings | default([]) | select('regex', 'Cannot parse event from ') | length == 0
+          - build_2 is not changed
+          - build_2.actions | selectattr('status', 'eq', 'Building') | length == 0
+          - build_2.warnings | default([]) | select('regex', 'Cannot parse event from ') | length == 0