Add example for text2image (#920)

Signed-off-by: Ye, Xinyu <xinyu.ye@intel.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Text2Image/docker_image_build/build.yaml

@@ -0,0 +1,13 @@
+# Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+services:
+  text2image:
+    build:
+      args:
+        http_proxy: ${http_proxy}
+        https_proxy: ${https_proxy}
+        no_proxy: ${no_proxy}
+      context: GenAIComps
+      dockerfile: comps/text2image/Dockerfile
+    image: ${REGISTRY:-opea}/text2image:${TAG:-latest}