**BUG REPORT**
1. Please describe the issue you observed:
- What did you do?
Starting a BookKeeper cluster in Docker Swarm using the official, latest Docker
images.
- What did you expect to see?
Bookkeeper starts up.
- What did you see instead?
Docker Swarm kills the containers because health checks fail.
Underlying issue: there's a health check script in the image at
`/opt/bookkeeper/scripts/healthcheck.sh`. This has a bug:
`./healthcheck.sh: line 34: /opt/bookkeeper/bin/bookkeeper shell bookiesanity:
No such file or directory`
Problematic code:
```
HEALTH_CHECK_CMD=${HEALTH_CHECK_CMD:-"${DEFAULT_HEALTH_CHECK_CMD}"}
exec "${HEALTH_CHECK_CMD}"
```
This should be
```
HEALTH_CHECK_CMD=${HEALTH_CHECK_CMD:-"${DEFAULT_HEALTH_CHECK_CMD}"}
eval "${HEALTH_CHECK_CMD}"
```
.. so `eval` instead of `exec`.
**BP**
This is the master ticket for tracking BP-<bp-number> :
[a short description for this BP]
Proposal PR - #<pr-number>
[ Full content available at: https://github.com/apache/bookkeeper/issues/1687 ]
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