Squashed 'core/' changes from 9883367..a49e155

a49e155 Make Docker footprint smaller
268f50c Update CHANGELOG.md

git-subtree-dir: core
git-subtree-split: a49e1559b08c113a645b85605e4460ea3a0052ee
Merge commit 'a6ed636873edca116c113191b230770b919cb92b' into hotfix/issue276