Unable to connect to containers of a swarm in docker-in-docker - docker

Question

I have been playing around with docker-in-docker (dind) setups and am running into a weird problem.
If I run a docker container separately inside dind and expose a port then I could connect to the port without any problems. For example, using the docker swarm visualizer inside dind:
/home/dockremap # docker run -d -p 8080:8080 dockersamples/visualizer:stable
/home/dockremap # wget localhost:8080
Connecting to localhost:8080 (127.0.0.1:8080)
index.html 100% |*********************** ....
However, if I run the same inside a swarm by deploying from a compose file it doesn't work.
Here is what my compose file looks like:
version: "3"
services:
visualizer:
image: dockersamples/visualizer:stable
ports:
- "8080:8080"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
deploy:
placement:
constraints: [node.role == manager]
networks:
- webnet
networks:
webnet:
and the commands I run:
/home/dockremap # docker swarm init
/home/dockremap # docker stack deploy -c compose.yaml test
now when I do wget I get connection refused error:
/home/dockremap # wget localhost:8080
Connecting to localhost:8080 (127.0.0.1:8080)
wget: can't connect to remote host (127.0.0.1): Connection refused
Should doing this sort of thing in dind be able to work by default, or is there something I need to configure? I am using docker 17.03.1-ce on Windows and here is what I get when I run docker info in dind:
Containers: 2
Running: 1
Paused: 0
Stopped: 1
Images: 1
Server Version: 17.05.0-ce
Storage Driver: vfs
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Swarm: active
NodeID: wz2r6iuyqztg3ivyk9fwsn976
Is Manager: true
ClusterID: mshadtrs0b1oayva2vrquf67d
Managers: 1
Nodes: 1
Orchestration:
Task History Retention Limit: 5
Raft:
Snapshot Interval: 10000
Number of Old Snapshots to Retain: 0
Heartbeat Tick: 1
Election Tick: 3
Dispatcher:
Heartbeat Period: 5 seconds
CA Configuration:
Expiry Duration: 3 months
Node Address: 172.17.0.2
Manager Addresses:
172.17.0.2:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9048e5e50717ea4497b757314bad98ea3763c145
runc version: 9c2d8d184e5da67c95d601382adf14862e4f2228
init version: 949e6fa
Security Options:
seccomp
Profile: default
Kernel Version: 4.4.59-boot2docker
Operating System: Alpine Linux v3.5 (containerized)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 987.1MiB
Name: 7e480e7313ae
ID: EL7P:NI2I:TOR4:I7IW:DPAB:WKYU:6A6J:NCC7:3K3E:6YVH:PYVB:2L2W
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled