docker: add IPTABLES_MODE env #46

Job	Run time
Build_v2rayA_Web	1m 9s
Build_v2ray_Debian_Packages	0s
Release_v2rayA_GUI_to_Docker	0s
Build_v2rayA_Binaries (linux, amd64)	56s
Build_v2rayA_Binaries (linux, arm64)	43s
Build_v2rayA_Binaries (linux, 386)	48s
Build_v2rayA_Binaries (linux, riscv64)	54s
Build_v2rayA_Binaries (linux, mips64)	53s
Build_v2rayA_Binaries (linux, mips64le)	1m 5s
Build_v2rayA_Binaries (linux, mipsle)	55s
Build_v2rayA_Binaries (linux, mips)	1m 0s
Build_v2rayA_Binaries (linux, loong64)	54s
Build_v2rayA_Binaries (linux, arm, 7)	1m 4s
Build_v2rayA_Binaries (linux, arm, 6)	52s
Build_v2rayA_Binaries (linux, arm, 5)	54s
Build_v2rayA_Binaries (windows, amd64, .exe)	58s
Build_v2rayA_Binaries (windows, arm64, .exe)	43s
Build_v2rayA_Binaries (darwin, amd64)	1m 54s
Build_v2rayA_Binaries (darwin, arm64)	1m 39s
Build_v2rayA_Binaries (freebsd, amd64)	57s
Build_v2rayA_Binaries (freebsd, arm64)	48s
Build_v2rayA_Binaries (openbsd, amd64)	41s
Build_v2rayA_Binaries (openbsd, arm64)	41s
Build_Windows_Installers	1m 31s
Build_Linux_Packages (linux, amd64)	1m 9s
Release_to_Homebrew	0s
Build_Linux_Packages (linux, arm64)	44s
Build_Linux_Packages (linux, 386)	42s
Build_Linux_Packages (linux, riscv64)	39s
Build_Linux_Packages (linux, mips64)	37s
Build_Linux_Packages (linux, mips64le)	1m 1s
Build_Linux_Packages (linux, mipsle)	27s
Build_Linux_Packages (linux, mips)	30s
Build_Linux_Packages (linux, loong64)	34s
Build_Linux_Packages (linux, arm, 7)	30s
Build_APT_Repository_and_AUR	0s
GitHub_Release	0s
Submit_to_Microsoft_winget	0s
Release_v2rayA_to_Docker	0s
	28m 52s

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