feat: support execute shell command in container

[touero]

• support execute shell command in container
• remove not needed import moudle

close #34

[github-actions]

	2 Warnings
⚠️	PR target branch is master. Ensure this PR follows the merge strategy!
⚠️	Flake8 code issues found (lines > 79 characters): src/easierdocker/easier_docker.py:64:80: E501 line too long (85 > 79 characters) src/easierdocker/easier_docker.py:84:80: E501 line too long (96 > 79 characters) src/easierdocker/easier_docker.py:86:80: E501 line too long (118 > 79 characters) src/easierdocker/easier_docker.py:87:80: E501 line too long (99 > 79 characters) src/easierdocker/easier_docker.py:89:80: E501 line too long (84 > 79 characters) src/easierdocker/easier_docker.py:92:80: E501 line too long (80 > 79 characters) src/easierdocker/easier_docker.py:100:80: E501 line too long (104 > 79 characters) src/easierdocker/easier_docker.py:101:80: E501 line too long (82 > 79 characters) src/easierdocker/easier_docker.py:110:80: E501 line too long (92 > 79 characters) src/easierdocker/easier_docker.py:123:80: E501 line too long (87 > 79 characters) src/easierdocker/easier_docker.py:128:80: E501 line too long (107 > 79 characters) src/easierdocker/easier_docker.py:153:80: E501 line too long (82 > 79 characters) src/easierdocker/easier_docker.py:158:80: E501 line too long (88 > 79 characters) src/easierdocker/easier_docker.py:173:80: E501 line too long (104 > 79 characters)

🤖 PR Auto Summary

🚀 Total affected files: 1
🆕 New files: 0
✏️ Modified files: 1
🗑️ Deleted files: 0
📊 Total lines changed: 18
📂 Key modified files:

• src/easierdocker/easier_docker.py

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