Add a Dockerised dev environment

[JamieTaylor-TUOS]

Add a Docker Image that can serve as dev env - particularly useful for windows users.

The Docker image:

• Uses python:3.9 as base (could perhaps use Python3.9-slim, or maybe even Alpine
• Install system libs and packages that are likely to b needed in dev
• Installs pip requirements
• Launches Jupyter notebooks by default, but can also be used to run arbitrary scripts

Pull Request

Description

I have built locally as:

>> docker build -t sheffieldsolar/pvoutput:dev-20211118 -f Dockerfile_dev .

Usage

To launch Jupyter:

>> cd <path-to-pvoutput-repo-root>
>> docker run -it --rm -v ${PWD}:/pvoutput -e PVOUTPUT_CONFIG=/pvoutput/.pvoutput.yml -p 1234:1234 sheffieldsolar/pvoutput:dev-20211118

The above command will volume-mount the locally cloned repo inside the container at /pvoutput so that code can be developed inside the container. Note it is also necessary to mount the config file, unless it happens to be in your repo root directory, in which case just set the PVOUTPUT_CONFIG env var.

To run arbitrary scrips form the repo:

>> cd <path-to-pvoutput-repo-root>
>> docker run -it --rm -v ${PWD}:/pvoutput -e PVOUTPUT_CONFIG=/pvoutput/.pvoutput.yml sheffieldsolar/pvoutput:dev-20211118 <command>

Fixes #65
Fixes #47

If approved, the built image can be hosted somewhere on the web and the README should be updated with the above usage instructions.

How Has This Been Tested?

It is my current dev environment, seems to work ok in all regards.

Checklist:

• My code follows OCF's coding style guidelines
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked my code and corrected any misspellings

[peterdudfield]

similar to what @flowirtz said about -slim

[peterdudfield]

ive adde issue #77 for this

[peterdudfield]

thanks for this