Add Dockerfile and docs for building Cloudberry Docker Images #639

Job	Run time
check-skip	3s
prepare-test-matrix-deb	3s
Build Apache Cloudberry DEB	14m 34s
ic-cbdb-parallel	29m 20s
DEB Install Test Apache Cloudberry	2m 12s
ic-deb-gpcontrib	4m 32s
pax-ic-deb-good-opt-off	20m 18s
ic-deb-contrib	4m 35s
pax-ic-deb-good-opt-on	24m 12s
ic-deb-good-opt-on	30m 22s
ic-deb-good-opt-off	26m 30s
Generate Apache Cloudberry Build Report	4s
	2h 36m 45s

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