introduce experimental watch command (skeletton)

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

docs/reference/compose.md

@@ -7,6 +7,7 @@ Docker Compose
 
 | Name                            | Description                                                             |
 |:--------------------------------|:------------------------------------------------------------------------|
+| [`alpha`](compose_alpha.md)     | Experimental commands                                                   |
 | [`build`](compose_build.md)     | Build or rebuild services                                               |
 | [`convert`](compose_convert.md) | Converts the compose file to platform's canonical format                |
 | [`cp`](compose_cp.md)           | Copy files/folders between a service container and the local filesystem |

docs/reference/compose_alpha.md

@@ -0,0 +1,15 @@
+# docker compose alpha
+
+<!---MARKER_GEN_START-->
+Experimental commands
+
+### Subcommands
+
+| Name                              | Description                                                                                          |
+|:----------------------------------|:-----------------------------------------------------------------------------------------------------|
+| [`watch`](compose_alpha_watch.md) | EXPERIMENTAL - Watch build context for service and rebuild/refresh containers when files are updated |
+
+
+
+<!---MARKER_GEN_END-->
+

docs/reference/compose_alpha_watch.md

@@ -0,0 +1,14 @@
+# docker compose alpha watch
+
+<!---MARKER_GEN_START-->
+EXPERIMENTAL - Watch build context for service and rebuild/refresh containers when files are updated
+
+### Options
+
+| Name      | Type | Default | Description       |
+|:----------|:-----|:--------|:------------------|
+| `--quiet` |      |         | hide build output |
+
+
+<!---MARKER_GEN_END-->
+

docs/reference/docker_compose_alpha.yaml

@@ -0,0 +1,15 @@
+command: docker compose alpha
+short: Experimental commands
+long: Experimental commands
+pname: docker compose
+plink: docker_compose.yaml
+cname:
+    - docker compose alpha watch
+clink:
+    - docker_compose_alpha_watch.yaml
+deprecated: false
+experimental: false
+experimentalcli: false
+kubernetes: false
+swarm: false
+

docs/reference/docker_compose_alpha_watch.yaml

@@ -0,0 +1,25 @@
+command: docker compose alpha watch
+short: |
+    EXPERIMENTAL - Watch build context for service and rebuild/refresh containers when files are updated
+long: |
+    EXPERIMENTAL - Watch build context for service and rebuild/refresh containers when files are updated
+usage: docker compose alpha watch [SERVICE...]
+pname: docker compose alpha
+plink: docker_compose_alpha.yaml
+options:
+    - option: quiet
+      value_type: bool
+      default_value: "false"
+      description: hide build output
+      deprecated: false
+      hidden: false
+      experimental: false
+      experimentalcli: false
+      kubernetes: false
+      swarm: false
+deprecated: false
+experimental: false
+experimentalcli: false
+kubernetes: false
+swarm: false
+