Merge pull request #4329 from esl/pin-mssql-docker-image #1128

Job	Run time
dialyzer on OTP 25.2	4m 50s
dynamic domains pgsql_mnesia on OTP 26.1.2	2m 5s
edoc on OTP 25.2	2m 34s
dynamic domains mysql_redis on OTP 26.1.2	2m 18s
internal_mnesia on OTP 26.1.2	2m 19s
dynamic domains odbc_mssql_mnesia on OTP 26.1.2	3m 22s
pgsql_mnesia on OTP 26.1.2	2m 11s
ubuntu_xenial package	4m 59s
dynamic domains pgsql_mnesia on OTP 25.3.2.6	2m 25s
mysql_redis on OTP 26.1.2	3m 26s
small_tests on OTP 25.3.2.9	7m 24s
odbc_mssql_mnesia on OTP 26.1.2	2m 20s
small_tests on OTP 26.2.2	7m 56s
ldap_mnesia on OTP 26.1.2	2m 1s
xref on OTP 25.2	2m 14s
elasticsearch_and_cassandra_mnesia on OTP 26.1.2	3m 38s
ldap_mnesia on OTP 25.3.2.6	2m 17s
pgsql_mnesia on OTP 25.3.2.6	3m 17s
coveralls_webhook	0s
	1h 1m 36s

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