Testing things in Fedora using Docker#

I got a report of a bug with my s3-ocr tool running on Fedora.

I attempted to replicate the bug in a Fedora container using Docker, by running this command:

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docker run -it fedora:latest /bin/bash

This downloaded the official image and dropped me into a Bash shell.

It turns out Fedora won’t let you run pip install with its default Python 3 without first creating a virtual environment:

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[root@d1146e0061d1 /]# python3 -m pip install s3-ocr
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/usr/bin/python3: No module named pip
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[root@d1146e0061d1 /]# python3 -m venv project_venv
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[root@d1146e0061d1 /]# source project_venv/bin/activate
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(project_venv) [root@d1146e0061d1 /]# python -m pip install s3-ocr
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Collecting s3-ocr
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  Downloading s3_ocr-0.5-py3-none-any.whl (14 kB)
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Collecting sqlite-utils
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  ...

Having done that I could test out my s3-ocr command like so:

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(project_venv) [root@d1146e0061d1 /]# s3-ocr start --help
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Usage: s3-ocr start [OPTIONS] BUCKET [KEYS]...
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  Start OCR tasks for PDF files in an S3 bucket
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      s3-ocr start name-of-bucket path/to/one.pdf path/to/two.pdf
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  ...