feat: add docker configuration

rate/Dockerfile

@@ -0,0 +1,16 @@
+FROM docker.io/golang:latest AS builder
+WORKDIR /build
+EXPOSE 5003
+
+COPY . ./
+RUN go mod download -x
+ENV CGO_ENABLED 0
+RUN go build -v -o rate
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /app
+COPY --from=builder /build/rate rate
+
+CMD ["/app/rate"]

rate/go.mod

@@ -0,0 +1,9 @@
+module code.vulpine.solutions/sam/Foxnouns.NET
+
+go 1.20
+
+require (
+	github.com/go-chi/httprate v0.14.1
+)
+
+require github.com/cespare/xxhash/v2 v2.3.0 // indirect

rate/go.sum

@@ -0,0 +1,7 @@
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/go-chi/httprate v0.14.1 h1:EKZHYEZ58Cg6hWcYzoZILsv7ppb46Wt4uQ738IRtpZs=
+github.com/go-chi/httprate v0.14.1/go.mod h1:TUepLXaz/pCjmCtf/obgOQJ2Sz6rC8fSf5cAt5cnTt0=
+golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/time v0.6.0 h1:eTDhh4ZXt5Qf0augr54TN6suAUudPcawVZeIAPU7D4U=
+golang.org/x/time v0.6.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=

rate/main.go

@@ -23,6 +23,14 @@ func main() {
 		log.Fatalf("unmarshaling config.json: %v", err)
 	}
 
+	// Override port from environment if it's set
+	if portEnv := os.Getenv("PORT"); portEnv != "" {
+		port, err := strconv.Atoi(portEnv)
+		if err == nil {
+			hn.Port = port
+		}
+	}
+
 	proxyURL, err := url.Parse(hn.ProxyTarget)
 	if err != nil {
 		log.Fatalf("parsing proxy_target as URL: %v", err)