mvn spring-boot:build-imagethe image will show up in your local registry
❯ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
paketobuildpacks/run base-cnb 793c0420709a 45 hours ago 87.7MB
gcr.io/k8s-minikube/kicbase v0.0.20 c6f4fc187bc1 4 weeks ago 1.09GB
restapi 0.0.1-SNAPSHOT 740a40e9d44c 41 years ago 288MB
gcr.io/paketo-buildpacks/builder base-platform-api-0.3 bbb944e79519 41 years ago 590MBnow you need to tag the image and push it to a registry. i am using docker hub, so i only need to add my use my username:
docker tag restapi:0.0.1-SNAPSHOT grafpoo/restapi:latestand push:
❯ docker push grafpoo/restapi:latest
The push refers to repository [docker.io/grafpoo/restapi]
1daae206ee97: Pushed
20e1cf6014bd: Pushed
43b7b01c45e1: Pushed
6763b99e3792: Layer already exists
aa7edff7133e: Layer already exists
7a7ffa0a3f6c: Layer already exists
7fbc97c38fad: Layer already exists
0b18b1f120f4: Layer already exists
7074331958bf: Pushed
ec0381c8f321: Layer already exists
230fbfb3ce9c: Pushed
cbe849c7f40e: Pushed
32fe97cac33e: Mounted from paketobuildpacks/run
ceb7a5edaf89: Mounted from paketobuildpacks/run
cd2f00bf3849: Mounted from paketobuildpacks/run
8cafc6d2db45: Mounted from paketobuildpacks/run
a5d4bacb0351: Mounted from paketobuildpacks/run
5153e1acaabc: Mounted from paketobuildpacks/run
latest: digest: sha256:e78a45c3e68d4dc8fb1471c677c834160b125ac71434eb97c64471a9228ef8f4 size: 4087now that we have the image in a registry, we can create the kubernetes yaml. as with the database, we're creating 3 resources - the ConfigMap (to set the environment variable for FOOTIE_DB_HOST, which will point to the service name of the PostgreSQL database; we've cleverly named this postgres), the Deployment, where we define the pod we want to run (and, in our solution, set the memory size for the container), and the Service (so we can expose the web application). You can see these in the GitHub repository solution
then, to load the new resources:
kubectl apply -k .