Add support for dynamic container names via runtime expressions

- Introduced a new optional `name` property in run container tasks, allowing users to define container names dynamically using runtime expressions.
- Updated the DSL reference with the new `name` field, detailing its usage and linking to runtime expression documentation.
- Added support for the `name` property in the YAML version of the JSON schema.
- Included an example demonstrating dynamic container naming based on workflow and task metadata.

This enhancement provides improved observability, debugging, and alignment with organizational conventions for container management.

Closes serverlessworkflow#1056

Signed-off-by: Jean-Baptiste Bianchi <[email protected]>

Author: JBBianchi

dsl-reference.md

@@ -796,6 +796,7 @@ Enables the execution of external processes encapsulated within a containerized
 | Name | Type | Required | Description |
 |:--|:---:|:---:|:---|
 | image | `string` | `yes` | The name of the container image to run |
+| name | `string` | `no` | A [runtime expression](dsl.md#runtime-expressions) used to give specific name to the container, if any. |
 | command | `string` | `no` | The command, if any, to execute on the container |
 | ports | `map` | `no` | The container's port mappings, if any  |
 | volumes | `map` | `no` | The container's volume mappings, if any  |

examples/run-container-with-name.yaml

@@ -0,0 +1,11 @@
+document:
+  dsl: '1.0.0-alpha5'
+  namespace: test
+  name: run-container-with-name
+  version: '0.1.0'
+do:
+  - runContainer:
+      run:
+        container:
+          image: hello-world
+          name: ${ "hello-\(.workflow.document.name)-\(.task.name)-\(.workflow.id)" }

schema/workflow.yaml

@@ -622,6 +622,10 @@ $defs:
                     type: string
                     title: ContainerImage
                     description: The name of the container image to run.
+                  name:
+                    type: string
+                    title: ContainerName
+                    description: A runtime expression used to give specific name to the container, if any.
                   command:
                     type: string
                     title: ContainerCommand