fix(k8s): remove CPU limits to resolve KubeCPUOvercommit alert

Remove cpu from resource limits while keeping memory limits and all
requests intact. CPU limits cause unnecessary throttling and
overcommit alerts when actual usage is far below limits.

.gitlab-ci.yml

@@ -1,22 +0,0 @@
-stages:
-  - build
-  - deploy-prod
-
-image: buildtool/build-tools:${BUILDTOOLS_VERSION}
-
-build:
-  stage: build
-  script:
-    - build
-    - push
-
-deploy-to-prod:
-  stage: deploy-prod
-  when: on_success
-  script:
-    - echo Deploy to PROD.
-    - deploy prod
-  environment:
-    name: prod
-  only:
-    - master

Dockerfile

@@ -1,4 +1,4 @@
-FROM amd64/nginx:1.29.4@sha256:1ead684dc0a33ef421caa42403272afeae59c8933edcedda6926d964a44d3f01
+FROM amd64/nginx:1.29.5@sha256:e5e99d386e625a3ae9492f8496903a42bac0abc0b9103852f180679aef9bf8a2
 MAINTAINER Joakim Olsson <joakim@unbound.se>
 
 ADD files/*.html files/*.jpg files/*.mp3 /usr/share/nginx/html/

k8s/deploy.yaml

@@ -52,7 +52,6 @@ spec:
             cpu: 5m
             memory: 5Mi
           limits:
-            cpu: 300m
             memory: 300Mi