Docker install fails on the npm install step (10)

[AlexCzar]

$ docker build -t mermaidjs/mermaid-live-editor https://github.com/mermaidjs/mermaid-live-editor.git
.......
.......
Step 10/28 : RUN npm install
 ---> Running in eba640eeec33
npm WARN deprecated @fortawesome/[email protected]: This package is deprecated. See https://git.io/fNCzJ for information about upgrading.
npm WARN deprecated [email protected]: core-js@<3.0 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.                                                                                                                       
npm WARN deprecated [email protected]: One of your dependencies needs to upgrade to fsevents v2: 1) Proper nodejs v10+ support 2) No more fetching binaries from AWS, smaller package size
npm WARN deprecated [email protected]: Please upgrade to kleur@3 or migrate to 'ansi-colors' if you prefer the old syntax. Visit <https://github.com/lukeed/kleur/releases/tag/v3.0.0\> for migration path(s).
npm WARN deprecated [email protected]: use String.prototype.padStart()
npm WARN deprecated [email protected]: CircularJSON is in maintenance only, flatted is its successor.
npm WARN deprecated [email protected]: core-js@<3.0 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
npm ERR! code ENOENT
npm ERR! syscall spawn git
npm ERR! path git
npm ERR! errno ENOENT
npm ERR! enoent Error while executing:
npm ERR! enoent undefined ls-remote -h -t ssh://[email protected]/dagrejs/dagre-d3.git
npm ERR! enoent 
npm ERR! enoent 
npm ERR! enoent spawn git ENOENT
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2019-11-26T08_51_39_307Z-debug.log
The command '/bin/sh -c npm install' returned a non-zero code: 1