### What changes were proposed in this pull request?
This PR proposes to add a feature that logs container output for docker integration tests.
With this change, if we run test with SBT, we will have like the following log in `unit-tests.log`.
```
===== CONTAINER LOGS FOR container Id: 3360c98eb28337d8b217fb614e47bf49aafa18a6cb60ecadf3178aee0c663021 =====
21/05/31 20:54:56.433 pool-1-thread-1 INFO PostgresIntegrationSuite: The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.
The database cluster will be initialized with locale "en_US.utf8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".
Data page checksums are disabled.
fixing permissions on existing directory /var/lib/postgresql/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... UTC
creating configuration files ... ok
running bootstrap script ... ok
sh: locale: not found
2021-05-31 11:54:49.892 UTC [29] WARNING: no usable system locales were found
performing post-bootstrap initialization ... ok
initdb: warning: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.
syncing data to disk ... ok
Success. You can now start the database server using:
pg_ctl -D /var/lib/postgresql/data -l logfile start
waiting for server to start....2021-05-31 11:54:50.284 UTC [34] LOG: starting PostgreSQL 13.0 on x86_64-pc-linux-musl, compiled by gcc (Alpine 9.3.0) 9.3.0, 64-bit
2021-05-31 11:54:50.287 UTC [34] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2021-05-31 11:54:50.296 UTC [35] LOG: database system was shut down at 2021-05-31 11:54:50 UTC
2021-05-31 11:54:50.301 UTC [34] LOG: database system is ready to accept connections
done
server started
/usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*
waiting for server to shut down....2021-05-31 11:54:50.363 UTC [34] LOG: received fast shutdown request
2021-05-31 11:54:50.366 UTC [34] LOG: aborting any active transactions
2021-05-31 11:54:50.368 UTC [34] LOG: background worker "logical replication launcher" (PID 41) exited with exit code 1
2021-05-31 11:54:50.368 UTC [36] LOG: shutting down
2021-05-31 11:54:50.402 UTC [34] LOG: database system is shut down
done
server stopped
PostgreSQL init process complete; ready for start up.
2021-05-31 11:54:50.510 UTC [1] LOG: starting PostgreSQL 13.0 on x86_64-pc-linux-musl, compiled by gcc (Alpine 9.3.0) 9.3.0, 64-bit
2021-05-31 11:54:50.510 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
2021-05-31 11:54:50.510 UTC [1] LOG: listening on IPv6 address "::", port 5432
2021-05-31 11:54:50.517 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2021-05-31 11:54:50.526 UTC [43] LOG: database system was shut down at 2021-05-31 11:54:50 UTC
2021-05-31 11:54:50.531 UTC [1] LOG: database system is ready to accept connections
2021-05-31 11:54:54.226 UTC [54] ERROR: relation "public.barcopy" does not exist at character 15
2021-05-31 11:54:54.226 UTC [54] STATEMENT: SELECT 1 FROM public.barcopy LIMIT 1
2021-05-31 11:54:54.610 UTC [59] ERROR: relation "public.barcopy2" does not exist at character 15
2021-05-31 11:54:54.610 UTC [59] STATEMENT: SELECT 1 FROM public.barcopy2 LIMIT 1
2021-05-31 11:54:54.934 UTC [63] ERROR: relation "shortfloat" does not exist at character 15
2021-05-31 11:54:54.934 UTC [63] STATEMENT: SELECT 1 FROM shortfloat LIMIT 1
2021-05-31 11:54:55.675 UTC [75] ERROR: relation "byte_to_smallint_test" does not exist at character 15
2021-05-31 11:54:55.675 UTC [75] STATEMENT: SELECT 1 FROM byte_to_smallint_test LIMIT 1
21/05/31 20:54:56.434 pool-1-thread-1 INFO PostgresIntegrationSuite:
===== END OF CONTAINER LOGS FOR container Id: 3360c98eb28337d8b217fb614e47bf49aafa18a6cb60ecadf3178aee0c663021 =====
```
### Why are the changes needed?
If we have container logs, it's useful to debug especially for GA.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
I run docker integration tests and got logs. The example shown above is for `PostgresIntegrationSuite`.
Closes#32715 from sarutak/log-docker-container.
Authored-by: Kousuke Saruta <sarutak@oss.nttdata.com>
Signed-off-by: Takeshi Yamamuro <yamamuro@apache.org>
08e6f633b5