docs: document supported environment variables

[sidey79]

Summary

• document supported container runtime environment variables in the README
• clarify FHEM-specific, locale, timeout, package-install, and runtime-detection variables
• fix existing README examples for UMASK, TIMEOUT_STOPPING, and LC_TIME

Testing

• git diff --check

[github-actions]

CPAN Build Report -threaded-bookworm / arm64

Artifact: cpan-inventory-threaded-bookworm-arm64

Excluded CPAN requirements for this image

• core: Device::Firmata::Constants, HiPi
• 3rdparty: Device::Firmata::Constants, SNMP

core

• Requirements: 136
• Satisfied from local libs: 135
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 141
• Satisfied from local libs: 140
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

[github-actions]

CPAN Build Report -bookworm / 386

Artifact: cpan-inventory-bookworm-386

Excluded CPAN requirements for this image

• core: Math::Pari, Crypt::Random, HiPi
• 3rdparty: SNMP

core

• Requirements: 136
• Satisfied from local libs: 135
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 141
• Satisfied from local libs: 140
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

[github-actions]

CPAN Build Report -threaded-bookworm / 386

Artifact: cpan-inventory-threaded-bookworm-386

Excluded CPAN requirements for this image

• core: Math::Pari, Crypt::Random, HiPi
• 3rdparty: SNMP

core

• Requirements: 136
• Satisfied from local libs: 135
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 141
• Satisfied from local libs: 140
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

[github-actions]

CPAN Build Report -bookworm / arm/v7

Artifact: cpan-inventory-bookworm-arm-v7

Excluded CPAN requirements for this image

• core: Device::Firmata::Constants, Math::Pari, Crypt::Random, HiPi
• 3rdparty: Device::Firmata::Constants, SNMP

core

• Requirements: 135
• Satisfied from local libs: 134
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 140
• Satisfied from local libs: 139
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

[github-actions]

CPAN Build Report -bookworm / arm64

Artifact: cpan-inventory-bookworm-arm64

Excluded CPAN requirements for this image

• core: Device::Firmata::Constants, HiPi
• 3rdparty: Device::Firmata::Constants, SNMP

core

• Requirements: 136
• Satisfied from local libs: 135
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 141
• Satisfied from local libs: 140
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

[github-actions]

CPAN Build Report -threaded-bookworm / arm/v7

Artifact: cpan-inventory-threaded-bookworm-arm-v7

Excluded CPAN requirements for this image

• core: Device::Firmata::Constants, Math::Pari, Crypt::Random, HiPi
• 3rdparty: Device::Firmata::Constants, SNMP

core

• Requirements: 135
• Satisfied from local libs: 134
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

3rdparty

• Requirements: 17
• Satisfied from local libs: 16
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0

all

• Requirements: 140
• Satisfied from local libs: 139
• Satisfied from core/base: 1
• Missing probable install failures: 0
• Unresolved requirements: 0
• Version mismatches: 0