Build i386 container (#3) #27

Job	Run time
Build CI containers (xgb-ci.clang_tidy)	2m 24s
Build CI containers (xgb-ci.cpu)	11m 53s
Build CI containers (xgb-ci.gpu)	7m 52s
Build CI containers (xgb-ci.gpu_build_r_rockylinux8)	11m 6s
Build CI containers (xgb-ci.gpu_build_rockylinux8)	13m 31s
Build CI containers (xgb-ci.gpu_build_rockylinux8_dev_ver)	13m 50s
Build CI containers (xgb-ci.jvm)	2m 52s
Build CI containers (xgb-ci.jvm_gpu_build)	4m 56s
Build CI containers (xgb-ci.manylinux_2_28_x86_64)	31s
Build CI containers (xgb-ci.manylinux2014_x86_64)	1m 22s
Build CI containers (xgb-ci.i386)	57s
Build CI containers (xgb-ci.aarch64)	4m 0s
Build CI containers (xgb-ci.manylinux2014_aarch64)	1m 2s
	1h 16m 16s

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