Docker update

Dockerfile

@@ -2,7 +2,7 @@ FROM rocker/shiny:4.2.1
 MAINTAINER Marine Institute
 
 # first install ssl and gdal (needed for soem of the packaage we will install in a moment)
-RUN sudo apt-get update && apt-get install -y libssl-dev libudunits2-0 libudunits2-dev libproj-dev libgdal-dev && apt-get clean && rm -rf /var/lib/apt/lists/ && rm -rf /tmp/downloaded_packages/ /tmp/*.rds
+RUN sudo apt-get update && apt-get upgrade -y && apt-get install -y libssl-dev libudunits2-0 libudunits2-dev libproj-dev libgdal-dev && apt-get clean && rm -rf /var/lib/apt/lists/ && rm -rf /tmp/downloaded_packages/ /tmp/*.rds
 
 # Install required packages (add additional package installs after these lines)
 RUN sudo chown -R shiny:shiny /var/lib/shiny-server/