ARROW-6859: [CI][Nightly] Disable docker layer caching for CircleCI tasks

[kszucs]

No description provided.

[kszucs]

@ursabot crossbow submit --help

[ursabot]

Usage: @ursabot crossbow submit [OPTIONS] [TASK]...

  Submit crossbow testing tasks.

  See groups defined in arrow/dev/tasks/tests.yml

Options:
  -g, --group [docker|integration|cpp-python|conda|wheel|linux|gandiva|nightly]
                                  Submit task groups as defined in tests.yml
  --help                          Show this message and exit.

[kszucs]

@ursabot crossbow submit -g docker

[ursabot]

AMD64 Conda Crossbow Submit (#69410) builder has been succeeded.

Revision: c73ed60

Submitted crossbow builds: ursa-labs/crossbow @ ursabot-246

Task	Status
docker-c_glib
docker-clang-format
docker-cpp
docker-cpp-alpine
docker-cpp-cmake32
docker-cpp-release
docker-cpp-static-only
docker-dask-integration
docker-docs
docker-go
docker-hdfs-integration
docker-iwyu
docker-java
docker-js
docker-lint
docker-pandas-master
docker-python-2.7
docker-python-2.7-alpine
docker-python-2.7-nopandas
docker-python-3.6
docker-python-3.6-alpine
docker-python-3.6-nopandas
docker-python-3.7
docker-r
docker-r-conda
docker-r-sanitizer
docker-rust
docker-spark-integration
docker-turbodbc-integration

[github-actions]

https://issues.apache.org/jira/browse/ARROW-6859