Requirements
In order to build the Physics Derivation Graph in a Docker image, the minimum functionality needed is
- Compile .tex files to .pdf and .png (LaTeX)
- Compile .gv files to .png (GraphViz)
- Run a webserver (eg flask or nginx or lighthttpd)
- Run .py scripts (Python 3)
- Read SQLite
In this post I explore whether Alpine is a sufficient OS. If not, Ubuntu is a candidate OS which supports the needed functionality.
Alpine-based
The build will be executed from the "proofofconcept" folder because the contents of the Docker image depend on files in the v4_file_per_expression/ folder.
cd proofofconcept
mkdir sandbox/docker_images/python_alpine
cat > sandbox/docker_images/python_alpine/Dockerfile << EOF
FROM python:2.7-alpine
MAINTAINER My Name <my.email.address@gmail.com>
LABEL distro_style="apk" distro="alpine" arch="x86_64" operatingsystem="linux"
RUN apk add --update --no-cache graphviz
RUN apk add --update --no-cache texlive-full
RUN apk add --update --no-cache texlive
RUN pip install pyyaml
RUN pip install sympy
RUN mkdir /derivations
RUN mkdir /inference_rules
ADD ./v4_file_per_expression/bin/interactive_user_prompt.py interactive_user_prompt.py
ADD ./v4_file_per_expression/lib/lib_physics_graph.py /lib/lib_physics_graph.py
ADD ./v4_file_per_expression/inference_rules/* /inference_rules/
#WORKDIR /bin
CMD ["python", "interactive_user_prompt.py"]
EOF
The above Dockerfile fails due to "texlive" and "texlive-full" not existing for alpine.
Now that the Dockerfile exists, we can build the image:
docker build --tag python_alpine/example sandbox/docker_images/python_alpine/
and run it to get the interactive prompt:
docker run -ti python_alpine/example
Ubuntu-based
cd proofofconcept
mkdir sandbox/docker_images/python_ubuntu
cat > sandbox/docker_images/python_ubuntu/Dockerfile << EOF
# 20180602
FROM ubuntu:18.04
MAINTAINER My Name <my.email.address@gmail.com>
RUN apt-get update \
&& apt-get upgrade -y \
&& apt-get install -y \
python-pip \
python2.7 \
graphviz
RUN pip install pyyaml
RUN pip install sympy
RUN mkdir /derivations
RUN mkdir /inference_rules
ADD ./v4_file_per_expression/bin/interactive_user_prompt.py interactive_user_prompt.py
ADD ./v4_file_per_expression/lib/lib_physics_graph.py /lib/lib_physics_graph.py
ADD ./v4_file_per_expression/inference_rules/* /inference_rules/
#WORKDIR /bin
#ENTRYPOINT ["/usr/bin/python2.7"]
CMD ["python", "interactive_user_prompt.py"]
EOF
docker build --tag python_ubuntu/example sandbox/docker_images/python_ubuntu/
Stop and remove all images
Not unexpectedly, I ran out of disk space.
docker stop $(docker ps -a -q)
docker rm $(docker ps -aq)
docker rmi -f $(docker images -q)
