fix: dockerfile port changed

Dockerfile

@@ -1,20 +1,17 @@
 FROM python:3.12-slim
 
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
-
-RUN useradd -m -u 1000 appuser
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
 
 WORKDIR /app
 
-COPY pyproject.toml README.md /app/
-COPY src /app/src
+COPY --chown=user pyproject.toml README.md /app/
+COPY --chown=user src /app/src
 
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir .
 
-USER appuser
-
-EXPOSE 8000
+EXPOSE 7860
 
-CMD ["uvicorn", "bmc.api:app", "--host", "0.0.0.0", "--port", "8000", "--app-dir", "/app/src"]
+CMD ["uvicorn", "bmc.api:app", "--host", "0.0.0.0", "--port", "7860"]