fix(container): parse_container_config accepts unwrapped inner-mapping shape #149

Job	Run time
Build Images (scanner-opengrep, docker/Dockerfile.opengrep)	23s
Build Images (scanner-bandit, docker/Dockerfile.bandit)	24s
Build Images (scanner-supply-chain, docker/Dockerfile.supply-chain)	16s
Build Images (cli, docker/Dockerfile.cli)	1m 0s
Test Argus CLI	1m 5s
Scan cli	1m 44s
Scan scanner-opengrep	1m 38s
Scan scanner-bandit	1m 39s
Scan scanner-supply-chain	1m 38s
Container Scan Summary	10s
	9m 57s

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