L2SS-1156: Try out PyTango 9.4.1rc1

docker-compose/hdbpp/Dockerfile

@@ -3,12 +3,12 @@ FROM ${SOURCE_IMAGE}
 
 USER root
 
+ENV DEBIAN_FRONTEND=noninteractive
+
 RUN apt-get update && \
     apt-get install -y ca-certificates
 
-RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-free" >> /etc/apt/sources.list && \
-    more /etc/apt/sources.list && \
-    apt-get update && \
+RUN apt-get update && \
     apt-get install -y \
         checkinstall \
         git \
@@ -20,11 +20,10 @@ RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-fre
         libcos4-dev \
         mariadb-server \
         libmariadb-dev-compat libmariadb-dev \
-        libmariadbclient-dev \
         postgresql \
         postgresql-contrib \
         libpq5 \
-        libpqxx-6.2 \
+        libpqxx-6.4 \
         libpq-dev \
         libpqxx-dev       
 
@@ -34,6 +33,7 @@ RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-fre
 RUN git clone https://gitlab.com/tango-controls/hdbpp/libhdbpp.git
 
 RUN cd libhdbpp \
+ && sed -i 's/CXX_STANDARD 11/CXX_STANDARD 14/' CMakeLists.txt \
  && mkdir build \
  && cd build \
  && cmake .. -DCMAKE_INCLUDE_PATH=/usr/local/include/tango \