Merge pull request #5839 from overleaf/csh-issue-5677-clsi-env

Add CLSI env var to indicate running in CLSI

GitOrigin-RevId: 9d55b001a32ecf7fa792023312c31bd9e6b64646

services/clsi/config/settings.defaults.js

@@ -86,6 +86,7 @@ if (process.env.DOCKER_RUNNER) {
         process.env.TEXLIVE_IMAGE || 'quay.io/sharelatex/texlive-full:2017.1',
       env: {
         HOME: '/tmp',
+        CLSI: 1,
       },
       socketPath: '/var/run/docker.sock',
       user: process.env.TEXLIVE_IMAGE_USER || 'tex',