Update Dockerfile

Dockerfile

@@ -38,7 +38,8 @@ RUN uv venv --python 3.11 && \
     chmod -R a+rx /web-ui/.venv && chmod -R a+r /web-ui/.venv
 
 # Install dependencies inside venv
-RUN .venv/bin/pip3 install --no-cache-dir --upgrade pip uv==0.4.17 playwright && \
+RUN .venv/bin/python3 -m ensurepip && \
+    .venv/bin/pip3 install --no-cache-dir --upgrade pip uv==0.4.17 playwright && \
     .venv/bin/pip3 install --no-cache-dir -r requirements.txt && \
     .venv/bin/playwright install --with-deps chromium