fix(k8s): make the health checks and the ingress-nginx overlay work

Dockerfile

@@ -9,14 +9,14 @@ RUN apk add --no-cache curl git && \
 
 FROM docker.io/alpine:3.24
 LABEL maintainer="Said Sef <saidsef@gmail.com> (saidsef.co.uk/)"
-ENV PORT=${PORT:-8080}
 
 USER nobody
 
 COPY --from=builder /app/faas-reverse-geocoding /usr/bin/
 
-HEALTHCHECK --interval=60s --timeout=10s CMD curl --fail 'http://localhost:${PORT}/' || exit 1
+# The final image has busybox wget but no curl.
+HEALTHCHECK --interval=60s --timeout=10s CMD wget -q -O /dev/null http://localhost:8080/ || exit 1
 
-EXPOSE ${PORT}
+EXPOSE 8080
 
 CMD ["/usr/bin/faas-reverse-geocoding"]

deployment/base/deployment.yml

@@ -29,9 +29,6 @@ spec:
       - name: geocode
         image: ghcr.io/saidsef/faas-reverse-geocoding:latest
         imagePullPolicy: Always
-        env:
-          - name: "PORT"
-            value: "8080"
         securityContext:
           runAsNonRoot: true
           runAsGroup: 65534
@@ -59,7 +56,7 @@ spec:
           exec:
             command:
               - pgrep
-              - geocode
+              - faas-reverse-geocoding
           initialDelaySeconds: 5
           periodSeconds: 30
           failureThreshold: 2

deployment/ingress-nginx/kustomization.yml

@@ -5,17 +5,3 @@ kind: Kustomization
 resources:
 - ../base
 - ingress.yml
-
-replacements:
-- source:
-    fieldPath: spec.rules[0].host
-    group: networking.k8s.io
-    kind: Ingress
-    name: geocode
-    version: v1
-  targets:
-    - select:
-        kind: Ingress
-        name: geocode
-        version: v1
-        group: networking.k8s.io

deployment/kustomization.yml

@@ -4,10 +4,5 @@ kind: Kustomization
 resources:
 - ./base
 
-images:
-- name: geocode
-  newName: ghcr.io/saidsef/faas-reverse-geocoding
-  newTag: "2023.12"
-
 commonAnnotations:
   app.kubernetes.io/part-of: geocode

geocode.go

@@ -41,7 +41,7 @@ func loggingMiddleware(next http.HandlerFunc) http.HandlerFunc {
 func main() {
 	flag.IntVar(&port, "port", 8080, "HTTP listening PORT")
 	flag.BoolVar(&verbose, "verbose", false, "Enable verbose logging")
-	flag.IntVar(&cache, "cache", 60, "Cache duration minutes (default 30)")
+	flag.IntVar(&cache, "cache", 60, "Cache duration in minutes")
 	flag.Parse()
 
 	// Set the verbosity level in the utils package