Update CMD syntax in CI Dockerfile

[fitztrev]

Get this warning during build:

JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 67)

See https://docs.docker.com/reference/build-checks/json-args-recommended/

lila-docker/docker/ci.Dockerfile

Lines 67 to 73 in 3e4fd09

	CMD mongod --fork --logpath /var/log/mongodb/mongod.log --dbpath /seeded \
	&& redis-server --daemonize yes \
	&& wait-for localhost:27017 --timeout=15 \
	&& wait-for localhost:6379 --timeout=15 \
	&& /lila-ws/target/universal/stage/bin/lila-ws \
	& wait-for localhost:9664 --timeout=15 \
	&& JAVA_OPTS="-Xms4g -Xmx4g" ./target/universal/stage/bin/lila -Dconfig.file="/lila/conf/application.conf" -Dlogger.file="/lila/conf/logger.dev.xml"