fix for logging in case systemd is not available

.devcontainer/Dockerfile

@@ -4,6 +4,7 @@ RUN     apt-get update \
     &&  apt-get upgrade -y
 RUN apt-get install --no-install-recommends -y \
     libatlas-base-dev \
+    libsystemd-dev \
     libffi-dev \
     python3-pip \
     && rm -rf /var/lib/apt/lists/*

cbpi/__init__.py

@@ -1,3 +1,3 @@
-__version__ = "4.4.1.a6"
+__version__ = "4.4.1.a7"
 __codename__ = "Yeast Starter"
 

cbpi/controller/system_controller.py

@@ -21,7 +21,7 @@ try:
     from systemd import journal
     systemd_available=True
 except Exception:
-    logger.warning("Failed to load systemd library. logfile download not available")
+    logging.warning("Failed to load systemd library. logfile download not available")
     systemd_available=False
 
 class SystemController: