Add Docker health check and enhance status page

Dockerfile

@@ -9,4 +9,6 @@ FROM alpine
 RUN apk add --no-cache ca-certificates openssl
 COPY --from=builder /go/go-http-proxy /bin/http_proxy
 
+HEALTHCHECK --interval=5s --timeout=3s --retries=3 CMD curl -f http://localhost:8080 || exit 1
+
 CMD ["/bin/http_proxy"]

main.go

@@ -15,6 +15,8 @@ import (
 	"github.com/joho/godotenv"
 )
 
+var startTime time.Time
+
 // GetPathMapping returns a key/value map of the PATH_MAPPING env var.
 func GetPathMapping() map[string]string {
 	pathMappingValue := os.Getenv("PATH_MAPPING")
@@ -111,7 +113,9 @@ func Index(c *gin.Context) {
 // Status returns the current time in a JSON object
 func Status(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{
-		"time": time.Now().String(),
+		"name": "proxy",
+		"startedAt": startTime,
+    "uptime": time.Since(startTime).Seconds(),
 	})
 }