fix: Dockerfile build

[robtry]

Description

Fixed the Dockerfile, which previously failed to build and run tests correctly inside the Docker container. The changes ensure that the Docker environment is properly set up to handle both tasks without errors.

How to test

Build the Docker image using the command docker build -t wallet-core-dev . and verify that it completes without errors.
docker run -i -t wallet-core-dev /bin/bash
./tools/build-and-test

Types of changes

• Bug fix

Checklist

• Create pull request as draft initially, unless its complete.
• Add tests to cover changes as needed.
• Update documentation as needed. (There is another PR in developer repo update docker build docs developer#358 )
• If there is a related Issue, mention it in the description.

[satoshiotomakan]

Hi @robtry, the CI has failed. Also we do not have any issue with running docker build command

[robtry]

So can you run ?
docker build docker/wallet-core --tag wallet-core-dev
docker run -i -t wallet-core-dev /bin/bash

and

cd wallet-core
./tools/build-and-test

I mean the folder docker does not even exists