Make dockerfile slightly clear and improve the build flow

.gitignore

@@ -16,3 +16,6 @@ dist-ssr
 
 cypress/videos
 cypress/screenshots
+
+/extra/healthcheck.exe
+/extra/healthcheck

docker/dockerfile

@@ -1,3 +1,19 @@
+############################################
+# Build in Golang
+# Super slow for armv7 (compile time = 1200 seconds, but other platforms within 5 seconds).
+# Do not change everything here, so it should always use the cache.
+############################################
+FROM golang:1.19.4-buster AS build_healthcheck
+WORKDIR /app
+
+COPY ./extra/healthcheck.go ./extra/healthcheck.go
+
+# Compile healthcheck.go
+RUN go build -x -o ./extra/healthcheck ./extra/healthcheck.go
+
+############################################
+# Build in Node.js
+############################################
 FROM louislam/uptime-kuma:base-debian AS build
 WORKDIR /app
 
@@ -7,24 +23,31 @@ COPY . .
 RUN npm ci --production && \
     chmod +x /app/extra/entrypoint.sh
 
-
+############################################
+# ⭐ Main Image
+############################################
 FROM louislam/uptime-kuma:base-debian AS release
 WORKDIR /app
 
 # Copy app files from build layer
 COPY --from=build /app /app
+COPY --from=build_healthcheck /app/extra/healthcheck /app/extra/healthcheck
 
 EXPOSE 3001
 VOLUME ["/app/data"]
-HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD node extra/healthcheck.js
+HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD extra/healthcheck
 ENTRYPOINT ["/usr/bin/dumb-init", "--", "extra/entrypoint.sh"]
 CMD ["node", "server/server.js"]
 
-
+############################################
+# Mark as Nightly
+############################################
 FROM release AS nightly
 RUN npm run mark-as-nightly
 
+############################################
 # Build an image for testing pr
+############################################
 FROM louislam/uptime-kuma:base-debian AS pr-test
 
 WORKDIR /app
@@ -54,8 +77,9 @@ VOLUME ["/app/data"]
 HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD node extra/healthcheck.js
 CMD ["npm", "run", "start-pr-test"]
 
-
+############################################
 # Upload the artifact to Github
+############################################
 FROM louislam/uptime-kuma:base-debian AS upload-artifact
 WORKDIR /
 RUN apt update && \

extra/healthcheck.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"crypto/tls"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"runtime"
+	"time"
+)
+
+func main() {
+	isFreeBSD := runtime.GOOS == "freebsd"
+
+	// process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
+	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
+		InsecureSkipVerify: true,
+	}
+
+	client := http.Client{
+		Timeout: 28 * time.Second,
+	}
+
+	sslKey := os.Getenv("UPTIME_KUMA_SSL_KEY")
+	if len(sslKey) == 0 {
+		sslKey = os.Getenv("SSL_KEY")
+	}
+
+	sslCert := os.Getenv("UPTIME_KUMA_SSL_CERT")
+	if len(sslCert) == 0 {
+		sslCert = os.Getenv("SSL_CERT")
+	}
+
+	hostname := os.Getenv("UPTIME_KUMA_HOST")
+	if len(hostname) == 0 && !isFreeBSD {
+		hostname = os.Getenv("HOST")
+	}
+	if len(hostname) == 0 {
+		hostname = "127.0.0.1"
+	}
+
+	port := os.Getenv("UPTIME_KUMA_PORT")
+	if len(port) == 0 {
+		port = os.Getenv("PORT")
+	}
+	if len(port) == 0 {
+		port = "3001"
+	}
+
+	protocol := ""
+	if len(sslKey) != 0 && len(sslCert) == 0 {
+		protocol = "https"
+	} else {
+		protocol = "http"
+	}
+
+	url := protocol + "://" + hostname + ":" + port
+
+	log.Println("Checking " + url)
+	resp, err := client.Get(url)
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	defer resp.Body.Close()
+
+	_, err = ioutil.ReadAll(resp.Body)
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	log.Printf("Health Check OK [Res Code: %d]\n", resp.StatusCode)
+
+}

extra/healthcheck.js

@@ -1,4 +1,5 @@
 /*
+ * ⚠️ Deprecated: Changed to healthcheck.go, it will be deleted in the future.
  * This script should be run after a period of time (180s), because the server may need some time to prepare.
  */
 const { FBSD } = require("../server/util-server");