Docker error

scott@scott-VirtualBox:~/contributor-day/wordpress-develop$ npm run env:start

> WordPress@5.5.0 env:start /home/scott/contributor-day/wordpress-develop
> node ./tools/local-env/scripts/start.js

ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.
child_process.js:669
    throw err;
    ^

Error: Command failed: docker-compose up -d wordpress-develop
    at checkExecSyncError (child_process.js:629:11)
    at execSync (child_process.js:666:13)
    at Object.<anonymous> (/home/scott/contributor-day/wordpress-develop/tools/local-env/scripts/start.js:7:1)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! WordPress@5.5.0 env:start: `node ./tools/local-env/scripts/start.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the WordPress@5.5.0 env:start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/scott/.npm/_logs/2020-06-04T16_49_39_519Z-debug.log