build: fix Docker build

[jonasgloning]

Closes #315

[codeclimate[bot]]

Code Climate has analyzed commit fa79cb85 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 71.4% (0.0% change).

View more on Code Climate.

[github-actions[bot]]

:tada: This PR is included in version 1.0.0-rc.7 :tada:

The release is available on:

• npm package (@rc dist-tag)
• GitHub release
• v1.0.0-rc.7

Your semantic-release bot :package::rocket:

[github-actions[bot]]

:tada: This PR is included in version 1.0.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release
• v1.0.0

Your semantic-release bot :package::rocket: