fix: remove creation of directories in root while using docker (Close #5)

Dockerfile

@@ -1,11 +1,9 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 # Install packages
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update
 RUN apt-get install -yy -q software-properties-common
-RUN add-apt-repository -y ppa:ubuntugis/ppa
-RUN apt-get update
 RUN apt-get install -yy -q libcurl4-gnutls-dev \
     libssl-dev libproj-dev libgdal-dev gdal-bin python3-gdal \
     libgdal-dev libudunits2-dev pkg-config libnlopt-dev libxml2-dev \
@@ -14,11 +12,24 @@ RUN apt-get install -yy -q libcurl4-gnutls-dev \
     build-essential libspatialindex-dev python3-rtree
 RUN apt-get install -yy -q wget unzip
 
-# Directory
-RUN mkdir starling_dir
-WORKDIR /starling_dir
-
 # Python packages
 COPY requirements.txt .
 RUN python3 -m pip install --upgrade pip
 RUN pip3 install -r requirements.txt
+
+# create a non-root user
+# give them the password "user" put them in the sudo group
+RUN useradd -d /home/starling_user -m -s /bin/bash starling_user \
+    && echo "starling_user:starling_user" | chpasswd && adduser starling_user sudo
+
+# Directory
+RUN mkdir starling_dir
+WORKDIR /starling_dir
+
+# Make the files owned by user
+RUN chown -R starling_user:starling_user /starling_dir
+
+RUN apt-get -y install sudo
+
+# Switch to your new user in the docker image
+USER starling_user

docs/run/install.rst

@@ -65,6 +65,9 @@ You should then be able to use this image to create Docker containers
 running the framework. Use the -v option to mount the Starling repository
 in the container.
 
+The Dockerfile create a new Linux user named 'starling_user'. If you need to use sudo,
+the password is also 'starling_user'.
+
 Detached mode
 +++++++++++++