Docker fails with binary error

```
node_1   | Error: Missing binding /app/node_modules/node-sass/vendor/linux_musl-x64-57/binding.node
node_1   | Node Sass could not find a binding for your current environment: Linux/musl 64-bit with Node.js 8.x
node_1   |
node_1   | Found bindings for the following environments:
node_1   |   - Linux 64-bit with Node.js 8.x
node_1   |
```