feat: remove app docker job for integration tests #273

Job	Run time
API test set: accounts.test.ts / Node: lts/*	1m 1s
API test set: accounts.test.ts / Node: lts/*	11m 36s
API test set: addresses.test.ts / Node: lts/*	1m 0s
API test set: addresses.test.ts / Node: lts/*	14m 0s
API test set: batches.test.ts / Node: lts/*	1m 3s
API test set: batches.test.ts / Node: lts/*	11m 16s
API test set: blocks.test.ts / Node: lts/*	1m 3s
API test set: blocks.test.ts / Node: lts/*	11m 3s
API test set: contracts.test.ts / Node: lts/*	1m 2s
API test set: contracts.test.ts / Node: lts/*	11m 38s
API test set: logs.test.ts / Node: lts/*	1m 0s
API test set: logs.test.ts / Node: lts/*	11m 0s
API test set: stats.test.ts / Node: lts/*	43s
API test set: stats.test.ts / Node: lts/*	11m 2s
API test set: tokens.test.ts / Node: lts/*	1m 1s
API test set: tokens.test.ts / Node: lts/*	11m 7s
API test set: transactions.test.ts / Node: lts/*	1m 1s
API test set: transactions.test.ts / Node: lts/*	14m 33s
	1h 56m 9s

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