Drone CI runner can't find gitea server - docker

Question

I am trying to run a gitea server with drone. They are currently both hosted on the same ubuntu machine and the docker containers are set up through a docker-compose.yml file.
When starting up all services I get the following error in the logs of the drone runner service:
time="2020-08-12T19:10:42Z" level=error msg="cannot ping the remote server" error="Post http://drone:80/rpc/v2/ping: dial tcp: lookup drone on 127.0.0.11:53: no such host"
Both http://gitea and http://drone point to localhost (via /etc/hosts). I sadly don't understand how or why the drone runner can not find the server. Calling "docker container inspect" on all my 4 containers shows they are all connected to the same network (drone_and_gitea_giteanet). Which is also the network I set in the DRONE_RUNNER_NETWORKS environment variable.
This is how my docker-compose.yml file looks:
version: "3.8"
# Create named volumes for gitea server, gitea database and drone server
volumes:
gitea:
gitea-db:
drone:
# Create shared network for gitea and drone
networks:
giteanet:
external: false
services:
gitea:
container_name: gitea
image: gitea/gitea:1
#restart: always
environment:
- APP_NAME="Automated Student Assessment Tool"
- USER_UID=1000
- USER_GID=1000
- ROOT_URL=http://gitea:3000
- DB_TYPE=postgres
- DB_HOST=gitea-db:5432
- DB_NAME=gitea
- DB_USER=gitea
- DB_PASSWD=gitea
networks:
- giteanet
ports:
- "3000:3000"
- "222:22"
volumes:
- gitea:/data
- /etc/timezone:/etc/timezone:ro
- /etc/localtime:/etc/localtime:ro
depends_on:
- gitea-db
gitea-db:
container_name: gitea-db
image: postgres:9.6
#restart: always
environment:
- POSTGRES_USER=gitea
- POSTGRES_PASSWORD=gitea
- POSTGRES_DB=gitea
networks:
- giteanet
volumes:
- gitea-db:/var/lib/postgresql/data
drone-server:
container_name: drone-server
image: drone/drone:1
#restart: always
environment:
# General server settings
- DRONE_SERVER_HOST=drone:80
- DRONE_SERVER_PROTO=http
- DRONE_RPC_SECRET=topsecret
# Gitea Config
- DRONE_GITEA_SERVER=http://gitea:3000
- DRONE_GITEA_CLIENT_ID=<CLIENT ID>
- DRONE_GITEA_CLIENT_SECRET=<CLIENT SECRET>
# Create Admin User, name should be the same as Gitea Admin user
- DRONE_USER_CREATE=username:AdminUser,admin:true
# Drone Logs Settings
- DRONE_LOGS_PRETTY=true
- DRONE_LOGS_COLOR=true
networks:
- giteanet
ports:
- "80:80"
volumes:
- drone:/data
depends_on:
- gitea
drone-agent:
container_name: drone-agent
image: drone/drone-runner-docker:1
#restart: always
environment:
- DRONE_RPC_PROTO=http
- DRONE_RPC_HOST=drone:80
- DRONE_RPC_SECRET=topsecret
- DRONE_RUNNER_CAPACITY=1
- DRONE_RUNNER_NETWORKS=drone_and_gitea_giteanet
networks:
- giteanet
volumes:
- /var/run/docker.sock:/var/run/docker.sock
depends_on:
- drone-server
It would help me a lot if somebody could maybe take a look at the issue and help me out! :)