base: add bison and flex packages

dockerfile-base

@@ -6,7 +6,7 @@ RUN apt-get -y update
 
 RUN apt-get -y upgrade --no-install-recommends \
     # linux base packages
-    adduser bash bzip2 ca-certificates cpio curl git jq sudo unzip vim wget \
+    adduser bash bison bzip2 ca-certificates cpio curl flex git jq sudo unzip vim wget \
     # dev tools
     clang clang-format clang-tidy cppcheck doxygen gcovr lcov pkg-config valgrind \
     # C/Fortran compiling tools