fix: dockerfile with debian image won't run

[PabloLION]

Description

When I tried to claim the FLT, I found that the docker throws an error on "docker build -t dev-reward-script ." (see the error message below)
This PR addresses issues related to package management security warnings and overall Docker image size by switching our base image from python:3.10 (Debian-based) to python:3.10-alpine. Alpine Linux offers a smaller footprint and fewer security vulnerabilities, making it a more suitable choice for our production environment.

Changes Made

• Changed the base image in our Dockerfile to python:3.10-alpine.
• Replaced apt-get commands with apk add to accommodate the Alpine package manager.

Error

Environment

Mac Studio with macOS 14.1.1 (23B81)
Docker version 20.10.11, build dea9396

error message

docker build -t dev-reward-script .

[+] Building 2.3s (8/10)                                                                                                                                                                                                                                                
 => [internal] load build definition from Dockerfile                                                                                                                                                                                                               0.0s
 => => transferring dockerfile: 309B                                                                                                                                                                                                                               0.0s
 => [internal] load .dockerignore                                                                                                                                                                                                                                  0.0s
 => => transferring context: 67B                                                                                                                                                                                                                                   0.0s
 => [internal] load metadata for docker.io/library/python:3.10                                                                                                                                                                                                     1.1s
 => [internal] load build context                                                                                                                                                                                                                                  0.1s
 => => transferring context: 227.01kB                                                                                                                                                                                                                              0.0s
 => CACHED [1/6] FROM docker.io/library/python:3.10@sha256:817c0d8684087acb6d88f0f0951f9a541aa3e762302aa5e8f439d5d12edd48ad                                                                                                                                        0.0s
 => [2/6] COPY . /claim                                                                                                                                                                                                                                            0.1s
 => [3/6] WORKDIR /claim                                                                                                                                                                                                                                           0.0s
 => ERROR [4/6] RUN apt update && apt install age && apt clean                                                                                                                                                                                                     0.9s
------                                                                                                                                                                                                                                                                  
 > [4/6] RUN apt update && apt install age && apt clean:                                                                                                                                                                                                                
#8 0.550                                                                                                                                                                                                                                                                
#8 0.550 WARNING: apt does not have a stable CLI interface. Use with caution in scripts.                                                                                                                                                                                
#8 0.550                                                                                                                                                                                                                                                                
#8 0.683 Get:1 http://deb.debian.org/debian bookworm InRelease [151 kB]                                                                                                                                                                                                 
#8 0.712 Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
#8 0.728 Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
#8 0.788 Err:1 http://deb.debian.org/debian bookworm InRelease
#8 0.788   At least one invalid signature was encountered.
#8 0.830 Err:2 http://deb.debian.org/debian bookworm-updates InRelease
#8 0.830   At least one invalid signature was encountered.
#8 0.870 Err:3 http://deb.debian.org/debian-security bookworm-security InRelease
#8 0.870   At least one invalid signature was encountered.
#8 0.887 Reading package lists...
#8 0.909 W: GPG error: http://deb.debian.org/debian bookworm InRelease: At least one invalid signature was encountered.
#8 0.909 E: The repository 'http://deb.debian.org/debian bookworm InRelease' is not signed.
#8 0.909 W: GPG error: http://deb.debian.org/debian bookworm-updates InRelease: At least one invalid signature was encountered.
#8 0.909 E: The repository 'http://deb.debian.org/debian bookworm-updates InRelease' is not signed.
#8 0.909 W: GPG error: http://deb.debian.org/debian-security bookworm-security InRelease: At least one invalid signature was encountered.
#8 0.909 E: The repository 'http://deb.debian.org/debian-security bookworm-security InRelease' is not signed.
------
executor failed running [/bin/sh -c apt update && apt install age && apt clean]: exit code: 100

TLDR

At first I tried to do it manually but later on I see ChatGPT can fix this. Here's another version of the installation wih package manager.

RUN apk update && \
    apk add --no-cache curl gnupg age

It took me a few days for the procrastination to fix this and I missed half of the airdrop (2500FLT) 😅
Is there anyway to claim it back?

[CLAassistant]

All committers have signed the CLA.