add health route

.dockerignore

@@ -0,0 +1,2 @@
+.env
+.git

.gitea/workflows/build.yaml

@@ -0,0 +1,25 @@
+name: Build
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Login to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.coupxd.com
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and Push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/arm64
+          push: true
+          tags: gitea.coupxd.com/cody/go-weather:latest

.gitignore

@@ -1 +1,2 @@
 .env
+.dockerenv

Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.25-bookworm AS builder
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+# Buildx automatically injects TARGETARCH, TARGETOS, and TARGETPLATFORM as build args into the Dockerfile
+ARG TARGETARCH
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -o go-weather .
+FROM gcr.io/distroless/static-debian12
+COPY --from=builder /app/go-weather /go-weather
+EXPOSE 8080
+ENTRYPOINT ["/go-weather"]

build.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+echo "Creating build environment"
+docker buildx create --name pibuilder --use
+
+echo "Printing build environment info"
+docker buildx inspect --bootstrap
+
+echo "Doing build"
+docker buildx build \
+    --platform linux/arm64 \
+    --push \
+    -t gitea.coupxd.com/cody/go-weather:latest \
+    .
+

main.go

@@ -36,6 +36,10 @@ type Reading struct {
 	FetchedAt  time.Time `json:"fetched_at"`
 }
 
+type HealthResponse struct {
+	Status string `json:"status"`
+}
+
 func getEnv(key string) string {
 	val := os.Getenv(key)
 	if val == "" {
@@ -243,6 +247,19 @@ func main() {
 		})
 	})
 
+	// GET /health
+	http.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
+		// TODO: Check if database is ready as well
+		if r.Method != http.MethodGet {
+			http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		okStatus := HealthResponse{Status: "ok"}
+
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(okStatus)
+	})
+
 	// GET /weather/history?city=London&limit=10
 	http.HandleFunc("/weather/history", func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {