fix: support external oci_image targets #1479

Job	Run time
matrix-prep-os	1s
matrix-prep-bazelversion	5s
test (ubuntu-latest, 7.1.1, ., true)	3m 31s
test (ubuntu-latest, 7.1.1, ., false)	2m 11s
test (ubuntu-latest, 7.1.1, e2e/wasm, false)	2m 4s
test (ubuntu-latest, 7.1.1, e2e/smoke, true)	13s
test (ubuntu-latest, 7.1.1, e2e/smoke, false)	13s
test (ubuntu-latest, 7.1.1, e2e/assertion, true)	3m 0s
test (ubuntu-latest, 6.4.0, ., true)	2m 43s
test (ubuntu-latest, 6.4.0, ., false)	3m 28s
test (ubuntu-latest, 6.4.0, e2e/wasm, false)	39s
test (ubuntu-latest, 6.4.0, e2e/smoke, true)	13s
test (ubuntu-latest, 6.4.0, e2e/smoke, false)	15s
test (ubuntu-latest, 6.4.0, e2e/assertion, true)	2m 41s
test (macos-13, 7.1.1, ., true)	5m 19s
test (macos-13, 7.1.1, ., false)	4m 59s
test (macos-13, 7.1.1, e2e/smoke, true)	33s
test (macos-13, 7.1.1, e2e/smoke, false)	32s
	32m 40s

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