[fix] #4292, #4327: Docker follow-up on configuration update

[0x009922]

Description

• Actualised Dockerfile(s)
• Added actual parsing of SUMERAGI_TRUSTED_PEERS env
• Refactor guts of config implementation

Linked issue

Closes #4292, #4327

[github-actions]

@BAStos525

[coveralls]

Pull Request Test Coverage Report for Build 8335863492

Details

• 90 of 95 (94.74%) changed or added relevant lines in 3 files are covered.
• 4578 unchanged lines in 88 files lost coverage.
• Overall coverage increased (+0.7%) to 57.502%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
config/base/src/lib.rs	51	56	91.07%

Files with Coverage Reduction	New Missed Lines	%
primitives/src/conststr.rs	1	91.14%
ffi/derive/src/convert.rs	1	84.45%
primitives/src/lib.rs	1	0.0%
core/src/sumeragi/network_topology.rs	1	98.78%
crypto/src/signature/bls/mod.rs	2	0.0%
config/src/snapshot.rs	3	78.57%
data_model/derive/src/has_origin.rs	3	95.16%
config/src/kura.rs	3	80.0%
primitives/src/addr.rs	3	64.04%
schema/derive/src/lib.rs	5	83.25%

Totals
Change from base Build 7884695009:	0.7%
Covered Lines:	22798
Relevant Lines:	39647

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💛 - Coveralls