task: Remove docker package setup. (#8959)

Keeping the index.js inside the docker folder to avoid our tsconfig
having to be changed. In addition, updated the build to copy less of the
folders into our final image, since we really only needed build and
node_modules.

Should reduce attack surface of the container.

.dockerignore

@@ -1,7 +1,6 @@
 *
 !src
 !package.json
-!docker
 !yarn.lock
 !scripts
 !tsconfig.json
@@ -15,3 +14,4 @@ frontend/node_modules
 !.yarnrc.yml
 !frontend/.yarn/**
 node_modules
+!docker/index.js

Dockerfile

@@ -15,8 +15,6 @@ RUN yarn build:frontend:if-needed
 
 RUN mkdir -p /unleash/build/frontend && mv /unleash/frontend/build /unleash/build/frontend/build
 
-WORKDIR /unleash/docker
-
 RUN yarn workspaces focus -A --production
 
 FROM node:$NODE_VERSION
@@ -27,7 +25,11 @@ ENV TZ=UTC
 
 WORKDIR /unleash
 
-COPY --from=builder /unleash/docker /unleash
+COPY --from=builder /unleash/build /unleash/build
+
+COPY --from=builder /unleash/node_modules /unleash/node_modules
+
+COPY ./docker/index.js /unleash/index.js
 
 RUN rm -rf /usr/local/lib/node_modules/npm/
 

docker/index.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const unleash = require('unleash-server');
+const unleash = require('./build');
 
 let options = {};