Add tests #21

Job	Run time
Supported processor platforms	17s
Lint Dockerfile	5s
Build linux/amd64 image	34s
Build linux/arm image	1m 5s
Build linux/arm64 image	1m 20s
Build linux/386 image	40s
Build linux/ppc64le image	1m 12s
Build linux/riscv64 image	1m 1s
Build linux/s390x image	1m 30s
Scan for vulnerabilities (linux/amd64)	25s
Scan for vulnerabilities (linux/arm)	18s
Scan for vulnerabilities (linux/arm64)	24s
Scan for vulnerabilities (linux/386)	19s
Scan for vulnerabilities (linux/ppc64le)	19s
Scan for vulnerabilities (linux/riscv64)	25s
Scan for vulnerabilities (linux/s390x)	20s
Test linux/amd64	15s
Test linux/arm	16s
Test linux/arm64	18s
Test linux/386	26s
Test linux/ppc64le	15s
Test linux/riscv64	15s
Test linux/s390x	29s
Push	0s
	12m 28s

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