Fix MCP Chat that stopped working (#1162)

Author: kazuhitogo

packages/cdk/mcp-api/Dockerfile

@@ -9,6 +9,7 @@ ENV UV_NO_CACHE=1
 ENV UV_NO_MANAGED_PYTHON=1
 ENV UV_PYTHON=/usr/local/bin/python
 ENV UV_INSTALL_DIR=/usr/local/bin
+ENV UV_PROJECT_ENVIRONMENT=/tmp/.venv
 
 RUN apt-get update -y && apt-get install curl nodejs npm graphviz -y
 RUN curl -LsSf https://astral.sh/uv/install.sh | sh

packages/cdk/mcp-api/app.py

@@ -20,6 +20,7 @@
     'UV_PYTHON': '/usr/local/bin/python',
     'UV_TOOL_DIR': '/tmp/.uv/tool',
     'UV_TOOL_BIN_DIR': '/tmp/.uv/tool/bin',
+    'UV_PROJECT_ENVIRONMENT': '/tmp/.venv',
     'npm_config_cache': '/tmp/.npm',
     'AWS_REGION': os.environ['AWS_REGION'],
     'AWS_ACCESS_KEY_ID': os.environ['AWS_ACCESS_KEY_ID'],