go-mingw docker image with win 7 support

add pkgs for cgo: mingw-w64 version is 8.0.0, gcc version is 10.2.1

Name		Name	Last commit message	Last commit date
Latest commit History 28 Commits
1.21		1.21
1.22.10		1.22.10
1.22.11		1.22.11
1.22.12		1.22.12
1.23.10		1.23.10
1.23.12		1.23.12
1.23.4		1.23.4
1.23.5		1.23.5
1.23.6		1.23.6
1.23.8		1.23.8
1.23.9		1.23.9
1.24.0		1.24.0
1.24.1		1.24.1
1.24.10		1.24.10
1.24.2		1.24.2
1.24.3		1.24.3
1.24.4		1.24.4
cmd		cmd
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md

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