MongooseError: The uri parameter to openUri() must be a string

[Alxzu]

Got this after a fresh clone & run (sh run.sh). I had to modify the docker-compose.yml:17 to COPY .env ./ in order to make it "work" as shown below

nest_1   | [Nest] 116   -
nest_1   | 3/25/2019, 6:42:10 PM
nest_1   | [NestFactory] Starting Nest application...
nest_1   | [Nest] 116   - 3/25/2019, 6:42:10 PM
nest_1   | [InstanceLoader] ApplicationModule dependencies initialized +13ms
nest_1   | [Nest] 116   - 3/25/2019, 6:42:10 PM   [InstanceLoader] TypegooseModule dependencies initialized +0ms
nest_1   | [Nest] 116   -
nest_1   | 3/25/2019, 6:42:10 PM   [ExceptionHandler] The `uri` parameter to `openUri()` must be a string, got "undefined". Make sure the first parameter to `mongoose.connect()` or `mongoose.createConnection()` is a string. +2ms
nest_1   | MongooseError: The `uri` parameter to `openUri()` must be a string, got "undefined". Make sure the first parameter to `mongoose.connect()` or `mongoose.createConnection()` is a string.
nest_1   |     at new MongooseError (/api/node_modules/mongoose/lib/error/mongooseError.js:14:11)
nest_1   |     at NativeConnection.Connection.openUri (/api/node_modules/mongoose/lib/connection.js:428:11)
nest_1   |     at Mongoose.createConnection (/api/node_modules/mongoose/lib/index.js:226:17)
nest_1   |     at Object.useFactory [as metatype] (/api/node_modules/nestjs-typegoose/dist/typegoose-core.module.js:32:40)
nest_1   |     at Injector.instantiateClass (/api/node_modules/@nestjs/core/injector/injector.js:217:50)
nest_1   |     at callback (/api/node_modules/@nestjs/core/injector/injector.js:67:41)
nest_1   |     at processTicksAndRejections (internal/process/next_tick.js:81:5)
nest_1   |     at process.runNextTicks [as _tickCallback] (internal/process/next_tick.js:51:3)
nest_1   |     at Function.Module.runMain (internal/modules/cjs/loader.js:800:11)
nest_1   |     at executeUserCode (internal/bootstrap/node.js:526:15)
nest_1   |     at startMainThreadExecution (internal/bootstrap/node.js:439:3)
nest_1   | 2019-03-25T18:42:10: PM2 log: App [docker-nest-typegoose:0] exited with code [0] via signal [SIGABRT]
nest_1   | 2019-03-25T18:42:10: PM2 log: App [docker-nest-typegoose:0] starting in -fork mode-
nest_1   | 2019-03-25T18:42:10: PM2 log: App [docker-nest-typegoose:0] online