Update Dockerfile to use LANGCHAIN_VERSION argument

Signed-off-by: Sun, Xuehao <xuehao.sun@intel.com>

DocSum/docker/Dockerfile

@@ -1,9 +1,8 @@
-
-
 # Copyright (C) 2024 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
-FROM langchain/langchain:latest
+ARG LANGCHAIN_VERSION=latest
+FROM langchain/langchain:${LANGCHAIN_VERSION}
 
 RUN apt-get update -y && apt-get install -y --no-install-recommends --fix-missing \
     libgl1-mesa-glx \

FaqGen/docker/Dockerfile

@@ -1,9 +1,8 @@
-
-
 # Copyright (C) 2024 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
-FROM langchain/langchain:latest
+ARG LANGCHAIN_VERSION=latest
+FROM langchain/langchain:${LANGCHAIN_VERSION}
 
 
 RUN apt-get update -y && apt-get install -y --no-install-recommends --fix-missing \

Translation/docker/Dockerfile

@@ -1,19 +1,9 @@
-# Copyright (c) 2024 Intel Corporation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-
-FROM langchain/langchain:latest
+# Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+ARG LANGCHAIN_VERSION=latest
+FROM langchain/langchain:${LANGCHAIN_VERSION}
+
 
 RUN apt-get update -y && apt-get install -y --no-install-recommends --fix-missing \
     libgl1-mesa-glx \