Add dockerfile build args documentation (#1095)

* Add dockerfile args docs

* Add dockerFileArgs to tye-schema.json

docs/reference/schema.md

@@ -162,6 +162,10 @@ Including `image` marks the service as a *container*:
 
 The Dockerfile to build from. Uses the name of the service as the name of the image. Only supported for `tye run` currently.
 
+#### `dockerFileArgs` (`string[]`)
+
+Build arguments to use when building a Docker image. This is only used when `dockerFile` is specified.
+
 #### `dockerFileContext` (string)
 
 Path to the Dockerfile Context to run docker build against. This is only used when `dockerFile` is specified as well.

src/schema/tye-schema.json

@@ -383,6 +383,13 @@
                     "description": "The Dockerfile to use.",
                     "type": "string"
                 },
+                "dockerFileArgs": {
+                    "description": "Build arguments to use when building the image.",
+                    "type": "array",
+                    "items": {
+                      "type": "object"
+                    }
+                },
                 "dockerFileContext": {
                     "description": "The Dockerfile context to run docker build on.",
                     "type": "string"