Fix docker warnings

[nvuillam]

• Fix docker warnings
  • FromAsCasing: 'as' and 'FROM' keywords' casing do not match
  • NoEmptyContinuation: Empty continuation line
  • SecretsUsedInArgOrEnv: Do not use ARG or ENV instructions for sensitive data

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ API	spectral	2		0	2.83s
✅ BASH	bash-exec	5		0	0.09s
✅ BASH	shellcheck	5		0	0.19s
✅ BASH	shfmt	5	0	0	0.68s
✅ COPYPASTE	jscpd	yes		no	4.22s
✅ DOCKERFILE	hadolint	129		0	17.17s
✅ JSON	jsonlint	18		0	0.24s
✅ JSON	v8r	20		0	28.77s
⚠️ MARKDOWN	markdownlint	266	0	270	37.91s
✅ MARKDOWN	markdown-table-formatter	266	0	0	140.04s
✅ OPENAPI	spectral	2		0	3.05s
⚠️ PYTHON	bandit	211		64	2.88s
✅ PYTHON	black	211	0	0	6.47s
✅ PYTHON	flake8	211		0	2.32s
✅ PYTHON	isort	211	0	0	1.33s
✅ PYTHON	mypy	211		0	18.27s
✅ PYTHON	pylint	211		0	22.38s
✅ PYTHON	ruff	211	0	0	0.64s
✅ REPOSITORY	checkov	yes		no	43.96s
✅ REPOSITORY	git_diff	yes		no	0.56s
⚠️ REPOSITORY	grype	yes		1	17.48s
✅ REPOSITORY	secretlint	yes		no	12.78s
✅ REPOSITORY	trivy	yes		no	24.85s
✅ REPOSITORY	trivy-sbom	yes		no	1.52s
⚠️ REPOSITORY	trufflehog	yes		1	12.6s
✅ SPELL	cspell	693		0	11.98s
⚠️ SPELL	lychee	347		1	9.41s
✅ XML	xmllint	3	0	0	0.61s
✅ YAML	prettier	161	0	0	5.19s
✅ YAML	v8r	102		0	182.7s
✅ YAML	yamllint	162		0	2.31s

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