My Bitbucket pipeline failed with the error message:
+ bundle exec hanami db prepare sh: 1: sqlite3: not found /usr/local/bundle/gems/hanami-model-1.2.0/lib/hanami/model/migrator/adapter.rb:214:in `block in execute' /usr/local/bundle/gems/hanami-model-1.2.0/lib/hanami/model/migrator/adapter.rb:216:in `block in execute' ...
Apparently the Ruby Docker image is based on Debian, so I can just add
... script: - apt-get update && apt-get install sqlite3 ...
to my bitbucket-pipelines.yml file.