MongoDb in a container seed with multiple collections - database

Question

I'm trying to feed my mongo running in a container with existing collections living outside the container.
docker-compose.yml looks like this:
version: "3"
services:
webapi:
image: webapp:develop
container_name: web_api
build:
args:
buildconfig: Debug
context: ../src/api
dockerfile: Dockerfile
environment:
- ASPNETCORE_ENVIRONMENT=Development
- ASPNETCORE_URLS=http://+:5003
ports:
- "5003:5003"
depends_on:
- mongodb
mongodb:
image: mongo:latest
container_name: mongodb
ports:
- "27017:27017"
mongo-seed:
build: ./mongo-seed
links:
- mongodb
mongo-seed/Dockerfile:
FROM mongo
COPY initA.json /initA.json
CMD mongoimport --host mongodb --db Database --collection A --type json --file /initA.json --jsonArray --mode merge
FROM mongo
COPY initB.json /initB.json
CMD mongoimport --host mongodb --db TestListDb --collection B --type json --file /initB.json --jsonArray --mode merge
But this doesn't do the trick as it overwrites the database with the last collection, so maintains only 'B' collection in this case.
How can I import multiple collections to one database?

Answer 1

I found a solution for that.
Also the answer shows how to configure network so the webapp can see the mongodb container.
Structure of files:
Web.Application
.
+-- docker_compose.yml
+-- mongo
| +-- dump
| +-- DatabaseDb
| +-- Dockerfile
| +-- restore.sh
docker-compose.yml
version: '3.4'
services:
webapp:
container_name: webapp
image: ${DOCKER_REGISTRY-}webapp
build:
context: ./Web.Application/
dockerfile: Dockerfile
environment:
- ASPNETCORE_ENVIRONMENT=Development
depends_on:
- mongo
networks:
clusternetwork:
ipv4_address: 1.1.0.1
mongo:
container_name: mongo
build:
context: ./Web.Application/mongo/
dockerfile: Dockerfile
networks:
clusternetwork:
ipv4_address: 1.1.0.12
networks:
clusternetwork:
driver: bridge
ipam:
driver: default
config:
- subnet: 1.1.0.0/24
./Web.Application/mongo/Dockerfile:
FROM mongo AS start
COPY . .
COPY restore.sh /docker-entrypoint-initdb.d/
./Web.Application/mongo/restore.sh:
#!/bin/bash
mongorestore --db DatabaseDb ./dump/DatabaseDb