Docker Compose defines and manages multicontainer applications from one configuration file, while creating a virtual network for communication between orchestrated services. section 7.5
A minimal wasmCloud deployment uses Compose to coordinate:
- A NATS server for wasmCloud communication. section 7.5
- A wasmCloud host connected to NATS through environment settings. section 7.5
- A wadm server that uses NATS to manage application deployment. section 7.5
Running the wasmCloud setup
Place docker-compose.yaml and wadm.yaml in a project directory, start the services with docker compose up, deploy with wash app deploy ./wadm.yaml, and verify the HTTP response with curl http://127.0.0.1:8000/. section 7.5
Listing 7.4 docker-compose.yaml for wasmCloud ecosystem
version: "3"
services:
nats: #1
image: nats:2.10-alpine
ports: #2
- "4222:4222"
command: ["-js"]
wasmcloud: #3
depends_on: #3
- "nats" #3
image: wasmcloud/wasmcloud:latest #3
environment: #3
RUST_LOG: debug,hyper=info,async_nats=info,oci_client= #3
➥info,cranelift_codegen=warn #3
WASMCLOUD_LOG_LEVEL: debug #3
WASMCLOUD_RPC_HOST: nats #3
WASMCLOUD_CTL_HOST: nats #3
ports: #3
- "8000:8000" #3
wadm: #4
depends_on: #4
- "nats" #4
image: ghcr.io/wasmcloud/wadm:latest #4
environment: #4
- WADM_NATS_SERVER=nats #4
Inspect the Compose configuration for NATS, the wasmCloud host, dependencies, images, ports, and environment variables. section 7.5
