dockerfile: add file for coverity

The coverity tool chains depends on file being present.

Signed-off-by: Daniel Wagner <[email protected]>

Author: igaw

Dockerfile.debian.python

@@ -10,7 +10,7 @@ RUN apt-get update && \
     apt-get install --no-install-recommends -y \
     meson gcc g++ clang pkg-config git valgrind \
     libjson-c-dev libssl-dev libkeyutils-dev libdbus-1-dev libpython3-dev \
-    pipx python3-dev swig xz-utils lcov gnupg curl && \
+    pipx python3-dev swig xz-utils lcov gnupg curl file && \
     apt-get update && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*