docs: add example for multiple compose files in README

Signed-off-by: Emilien Escalle <emilien.escalle@escemi.com>

.github/ghadocs/examples/6_multiple-compose-files.md

@@ -0,0 +1,18 @@
+<!-- markdownlint-disable first-line-heading -->
+
+### Example with multiple compose files
+
+Specify multiple compose files to use with the `docker compose` command. This is
+useful when you have a base compose file and additional files for different
+environments or configurations.
+
+```yaml
+steps:
+  # need checkout before using compose-action
+  - uses: actions/checkout@v3
+  - uses: hoverkraft-tech/compose-action@v1.5.1
+    with:
+      compose-file: |
+        ./docker/docker-compose.yml
+        ./docker/docker-compose.ci.yml
+```

README.md

@@ -90,15 +90,17 @@ Some extra options can be passed to the `docker compose down` command using the
     #
     compose-version: ""
 
+    # Description: The log level used for Docker Compose service logs. Can be one of
+    # "debug", "info".
+    #
+    # Default: debug
+    services-log-level: ""
+
     # Description: The GitHub token used to create an authenticated client (to fetch
     # the latest version of docker compose).
     #
     # Default: ${{ github.token }}
     github-token: ""
-
-    # Description: The log level used for Docker Compose service logs. Can be one of "debug", "info".
-    # Default: "debug"
-    services-log-level: "debug"
 ```
 
 <!-- end usage -->
@@ -117,8 +119,8 @@ Some extra options can be passed to the `docker compose down` command using the
 | <code>compose-flags</code>      | Additional options to pass to <code>docker compose</code> command.                                                                               |                                      | **false**    |
 | <code>cwd</code>                | Current working directory                                                                                                                        | <code>${{ github.workspace }}</code> | **false**    |
 | <code>compose-version</code>    | Compose version to use.<br />If null (default), it will use the current installed version.<br />If "latest", it will install the latest version. |                                      | **false**    |
+| <code>services-log-level</code> | The log level used for Docker Compose service logs.<br />Can be one of "debug", "info".                                                          | <code>debug</code>                   | **false**    |
 | <code>github-token</code>       | The GitHub token used to create an authenticated client (to fetch the latest version of docker compose).                                         | <code>${{ github.token }}</code>     | **false**    |
-| <code>services-log-level</code> | The log level used for Docker Compose service logs. Can be one of "debug", "info".                                                               | debug                                | **false**    |
 
 <!-- end inputs -->
 <!-- start outputs -->
@@ -213,3 +215,20 @@ steps:
         helloworld2
         helloworld3
 ```
+
+### Example with multiple compose files
+
+Specify multiple compose files to use with the `docker compose` command. This is
+useful when you have a base compose file and additional files for different
+environments or configurations.
+
+```yaml
+steps:
+  # need checkout before using compose-action
+  - uses: actions/checkout@v3
+  - uses: hoverkraft-tech/compose-action@v1.5.1
+    with:
+      compose-file: |
+        ./docker/docker-compose.yml
+        ./docker/docker-compose.ci.yml
+```

action.yml

@@ -38,6 +38,12 @@ inputs:
       If null (default), it will use the current installed version.
       If "latest", it will install the latest version.
     required: false
+  services-log-level:
+    description: |
+      The log level used for Docker Compose service logs.
+      Can be one of "debug", "info".
+    required: false
+    default: "debug"
   github-token:
     description: The GitHub token used to create an authenticated client (to fetch the latest version of docker compose).
     default: ${{ github.token }}