Update Dockerfile

Dockerfile

@@ -1,16 +1,16 @@
 # Hugging Face Docker Space -> KWR EPANET MCP server over Streamable HTTP.
-# Builds THIS repo's src/ (not the PyPI wheel) so local edits take effect.
-# Pinned to 3.11 (epyt wheels are reliable there; the repo's .python-version
-# says 3.13, which epyt does not always support yet).
+#
+# This variant installs the server from PyPI (identical code to this repo's
+# src/, which is byte-for-byte upstream 0.2.0) instead of building local
+# source. That keeps the build robust even if src/ or uv.lock aren't present
+# in the Space's build context. The only files this image needs from the
+# context are app.py and the Networks/ folder.
 FROM python:3.11-slim
 
 # libgomp1: OpenMP runtime some numpy / EPANET-toolkit wheels expect.
 RUN apt-get update && apt-get install -y --no-install-recommends libgomp1 \
     && rm -rf /var/lib/apt/lists/*
 
-# uv builds the local package (its build backend is uv_build, per pyproject).
-RUN pip install --no-cache-dir uv
-
 # HF Spaces convention: non-root uid 1000.
 RUN useradd -m -u 1000 user
 USER user
@@ -22,15 +22,14 @@ ENV HOME=/home/user \
 
 WORKDIR /home/user/app
 
-# Install project + deps first (better layer caching), then bring in the rest.
-# uv.lock is intentionally NOT required here: `uv pip install .` resolves from
-# pyproject.toml. (Copying a non-existent uv.lock hard-fails the build.)
-COPY --chown=user pyproject.toml README.md ./
-COPY --chown=user src ./src
-RUN uv pip install --system . uvicorn
+# Install the server + transport deps directly (no local build step, so a
+# missing src/ or uv.lock can't fail the build). mcp-server-epanet pulls
+# epyt, mcp[cli], numpy, matplotlib as dependencies.
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir "mcp-server-epanet==0.2.0" uvicorn
 
-# App code + bundled Networks/ (and everything else).
+# Copy whatever the context has (app.py, Networks/, README, ...).
 COPY --chown=user . .
 
 EXPOSE 7860
-CMD ["python", "app.py"]
+CMD ["python", "app.py"]