Comment the dockerfile better

Dockerfile

@@ -1,12 +1,18 @@
 FROM ubuntu:trusty
+
+# Install the prerequisites for this
 RUN sudo apt-get -y update
 RUN sudo apt-get -y upgrade
 RUN sudo apt-get install -y sqlite3 libsqlite3-dev python3 python3-pip
 RUN  pip3 install 'pyyaml>5.1'
 
+# Ensure that python runs everything as UTF-8 compatible
 ENV PYTHONIOENCODING UTF-8
+
+# Copy the project into the docker image
 COPY . /project
 
 WORKDIR /project/bin
 
+# Run the database creation script
 CMD [ "python3", "gendb.py"]