Docker improvements

- Modify onionr.sh to parse env and supply args to run-onionr-node.py
- Run onionr by default rather than bash
- Run as unprivileged user by default instead of root
- Use /app for all code
- Specify python 3.7 (3.8 fails to build cffi)
- Use apt-get rather than apt (apt's CLI is not stable)
- Slight reformatting and consolidation

Dockerfile

@@ -1,28 +1,30 @@
-FROM python
+FROM python:3.7
 
-#Base settings
-ENV HOME /root
+USER root
+
+RUN mkdir /app
+WORKDIR /app
+
+ENV PORT=8080
+EXPOSE 8080
 
 #Install needed packages
-RUN apt update && apt install -y  tor locales
+RUN apt-get update && apt-get install -y tor locales
 
 RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
     locale-gen
-ENV LANG en_US.UTF-8  
-ENV LANGUAGE en_US:en  
-ENV LC_ALL en_US.UTF-8  
+ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8
 
-WORKDIR /srv/
-ADD ./requirements.txt /srv/requirements.txt
+ADD ./requirements.txt /app/requirements.txt
 RUN pip3 install --require-hashes -r requirements.txt
 
-WORKDIR /root/
 #Add Onionr source
-COPY . /root/
-VOLUME /root/data/
+COPY . /app/
 
-#Set upstart command
-CMD bash
+VOLUME /app/data/
 
-#Expose ports
-EXPOSE 8080
+#Default to running as nonprivileged user
+RUN chmod g=u -R /app
+USER 1000
+
+CMD ["bash", "./onionr.sh"]