Fail Docker build when pip check fails before SDK override

Use && after pip check so its exit status gates the RUN step; with a
trailing semicolon, an empty or successful SDK_VERSION branch could mask
a broken dependency environment.

Author: cursoragent

Dockerfile

@@ -143,7 +143,7 @@ RUN if [ "$USE_LOCAL_INSTALL" = "true" ]; then \
  echo "Failed to install socketsecurity==$CLI_VERSION after 10 attempts"; \
  exit 1; \
  fi; \
- pip check; \
+ pip check && \
  if [ ! -z "$SDK_VERSION" ]; then \
  pip install --index-url ${PIP_INDEX_URL} --extra-index-url ${PIP_EXTRA_INDEX_URL} socketdev==${SDK_VERSION}; \
  fi; \