feat: add docker multi-platform image support (#182)

[tkrop]

This pull request adds support for docker multi-platform images. To accomplish this, the pull request completely redesigns the build* and image* targets intensifying the support for GOOS and GOARCH to control the build binaries. Finally, it introduces a new external (global) variable PLATFORM, that can be used to defined the targeted platforms.

Besides, the pull request optimizes the tools installation and update process to speed up and improve especially the off-line/low-bandwidth behavior. In this context the it also improves the log information about which tools are actually installed.

Finally, the pull request also update the go-make to use latest versions of the go-libraries.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅ (target: 80.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (64b4b04)	416	416	100.00%
Head commit (d60b1be)	416 (+0)	416 (+0)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#182)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[coveralls]

Pull Request Test Coverage Report for Build 22816667659

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 21761779296:	0.0%
Covered Lines:	416
Relevant Lines:	416

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💛 - Coveralls