fix(docs): Dockerfile #692

Job	Run time
bdk_test	1m 57s
check_stable	1m 33s
build (x86_64-unknown-linux-gnu, ubuntu-latest)	2m 5s
build (armv7-unknown-linux-gnueabihf, ubuntu-latest)	5m 38s
docker_tests (happy_path)	2m 47s
build (x86_64-apple-darwin, macos-12)	2m 38s
rpc_tests	3m 47s
docker_tests (happy_path_restart_bob_after_xmr_locked)	2m 56s
build (aarch64-apple-darwin, macos-latest)	1m 36s
docker_tests (happy_path_restart_bob_before_xmr_locked)	2m 54s
build (x86_64-pc-windows-msvc, windows-latest)	5m 11s
docker_tests (happy_path_restart_alice_after_xmr_locked)	2m 57s
sqlx_test	1m 17s
docker_tests (alice_and_bob_refund_using_cancel_and_refund_command)	2m 47s
static_analysis	4m 10s
test (ubuntu-latest)	5h 53m 46s
test (macos-latest)	6h 0m 15s
docker_tests (alice_and_bob_refund_using_cancel_then_refund_command)	2m 48s
docker_tests (alice_and_bob_refund_using_cancel_and_refund_command_timelock_not_expired)	2m 56s
docker_tests (alice_manually_punishes_after_bob_dead_and_bob_cancels)	2m 51s
docker_tests (punish)	3m 10s
docker_tests (alice_punishes_after_restart_bob_dead)	3m 8s
docker_tests (alice_manually_punishes_after_bob_dead)	3m 9s
docker_tests (alice_refunds_after_restart_bob_refunded)	2m 51s
docker_tests (ensure_same_swap_id)	2m 30s
docker_tests (concurrent_bobs_before_xmr_lock_proof_sent)	3m 3s
docker_tests (concurrent_bobs_after_xmr_lock_proof_sent)	3m 22s
docker_tests (alice_manually_redeems_after_enc_sig_learned)	3m 12s
docker_tests (happy_path_bob_offline_while_alice_redeems_btc)	5m 51s
	13h 17m 5s

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