feat: enable metrics

Dockerfile

@@ -1,12 +1,24 @@
 FROM docker.io/alpine:latest as builder
 
+WORKDIR /tmp
+
+RUN apk add -U --no-cache hugo curl tar jq && \
+    export CADDY_VERSION=$(curl https://api.github.com/repos/caddyserver/caddy/releases/latest | jq -r '.tag_name | (sub("v";""))') && \
+    curl -L https://github.com/caddyserver/caddy/releases/download/v${CADDY_VERSION}/caddy_${CADDY_VERSION}_linux_amd64.tar.gz | tar -xvz caddy
+
 WORKDIR /src
 
 COPY . /src/
 
-RUN apk add -U hugo && \
-    hugo --minify --environment production --config config.toml
+RUN hugo --minify --environment production --config config.toml
 
-FROM docker.io/caddy:2-alpine
+FROM gcr.io/distroless/static as final
 
-COPY --from=builder /src/public /usr/share/caddy
+COPY --from=builder /tmp/caddy /bin
+COPY --from=builder /src/public /usr/share/caddy
+COPY deploy/caddy/caddy.json /etc/caddy/caddy.json
+
+EXPOSE 3000
+
+ENTRYPOINT [ "/bin/caddy" ]
+CMD [ "run", "--config=/etc/caddy/caddy.json" ]

deploy/caddy/caddy.json

@@ -0,0 +1,30 @@
+{
+    "apps": {
+        "http": {
+            "servers": {
+                "blog": {
+                    "listen": [
+                        ":3000"
+                    ],
+                    "routes": [
+                        {
+                            "handle": [
+                                {
+                                    "handler": "file_server",
+                                    "root": "/usr/share/caddy",
+                                    "index_names": [
+                                        "index.html"
+                                    ],
+                                    "pass_thru": true
+                                },
+                                {
+                                    "handler": "metrics"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            }
+        }
+    }
+}

deploy/helm/templates/deployment.yaml

@@ -34,15 +34,15 @@ spec:
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           ports:
             - name: http
-              containerPort: 80
+              containerPort: 3000
               protocol: TCP
           livenessProbe:
             httpGet:
-              path: /
+              path: /metrics
               port: http
           readinessProbe:
             httpGet:
-              path: /
+              path: /metrics
               port: http
           resources:
             {{- toYaml .Values.resources | nindent 12 }}

deploy/helm/values.yaml

@@ -10,8 +10,7 @@ image:
   # Overrides the image tag whose default is the chart appVersion.
   tag: "latest"
 
-imagePullSecrets:
-  - name: ghcr-login-secret
+imagePullSecrets: []
 nameOverride: ""
 fullnameOverride: ""
 
@@ -30,7 +29,7 @@ securityContext: {}
 
 service:
   type: ClusterIP
-  port: 80
+  port: 3000
 
 ingress:
   enabled: true