Unable to install via pip on Alpine Docker

[kggx]

I'm trying to install the pip package on the Python Alpine Docker-Image 3.12 (python:3.12-alpine). However, this is failing with ERROR: Could not find a version that satisfies the requirement demoparser2 (from versions: none). The Debian based image python:3.12 works just fine.

Due to the fact the Alpine based distribution is focusing on a small image size and security it is often used in a server-less function environment such as Google Cloud Run or AWS Lambda. Successfully building the package on said distribution would probably beneficial to many others.

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Build output

[+] Building 5.6s (7/7) FINISHED                                                                                                                                                              docker:default
 => [internal] load build definition from Dockerfile                                                                                                                                                    0.0s
 => => transferring dockerfile: 326B                                                                                                                                                                    0.0s
 => [internal] load metadata for docker.io/library/python:3.12-alpine                                                                                                                                   0.7s
 => [internal] load .dockerignore                                                                                                                                                                       0.0s
 => => transferring context: 2B                                                                                                                                                                         0.0s
 => CACHED [1/4] FROM docker.io/library/python:3.12-alpine@sha256:5049c050bdc68575a10bcb1885baa0689b6c15152d8a56a7e399fb49f783bf98                                                                      0.0s
 => [2/4] RUN apk update                                                                                                                                                                                0.8s
 => [3/4] RUN pip install --upgrade pip                                                                                                                                                                 3.3s
 => ERROR [4/4] RUN pip install demoparser2                                                                                                                                                             0.7s 
------                                                                                                                                                                                                       
 > [4/4] RUN pip install demoparser2:                                                                                                                                                                        
0.635 ERROR: Could not find a version that satisfies the requirement demoparser2 (from versions: none)                                                                                                       
0.648 ERROR: No matching distribution found for demoparser2                                                                                                                                                  
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Dockerfile:10
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   8 |     RUN pip install --upgrade pip
   9 |     
  10 | >>> RUN pip install demoparser2
  11 |     
  12 |     # COPY requirements.txt ./
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Dockerfile

FROM python:3.12-alpine

RUN apk update
RUN pip install --upgrade pip

RUN pip install demoparser2

CMD [ "python", "./main.py"]