feat: Parameterize the orb-ns Docker image so that ENV can be used to customize more arguments

[github-actions[bot]]

Test flake analysis

status	platform	features	toolchain
🟡	windows-latest	test-kubo,headers	stable
🟢	macos-13	test-kubo,headers,rocksdb	stable
🟢	ubuntu-latest	test-kubo,headers	nightly
🟢	ubuntu-latest	test-kubo,headers,rocksdb	stable
🟢	macos-13	test-kubo,headers	stable
🟢	ubuntu-latest	test-kubo,headers	stable

Flake summary for windows-latest, test-kubo,headers, stable

     Summary [  60.083s] 209 tests run: 209 passed (1 flaky), 2 skipped
   FLAKY 2/5 [   4.252s] noosphere::distributed_basic gateway_publishes_and_resolves_petnames_configured_by_the_client