Use java8

Dockerfile

@@ -1,4 +1,3 @@
-ARG VERSION=17
 FROM golang AS builder
 
 WORKDIR /app
@@ -10,8 +9,8 @@ COPY ./go.sum /app
 RUN go build -o /app/main /app/src/main.go 
 RUN go build -o /app/cmd /app/src/cmd.go 
 
-
+ARG JAVA_VERSION=16
-FROM openjdk:$VERSION
+FROM openjdk:8
 
 ENV MIN_MEM=512M
 ENV MAX_MEM=1G
@@ -28,4 +27,4 @@ VOLUME [ "/server" ]
 
 WORKDIR /server
 
-CMD [ "/main" ]
+ENTRYPOINT [ "/main" ]

docker-compose.yml

@@ -2,7 +2,7 @@ version: '3.7'
 
 services:
     minecraft:
-      image: magmise/minecraft:latest
+      image: magmise/minecraft:java8
       container_name: minecraft
       build: .
       restart: unless-stopped
@@ -10,7 +10,7 @@ services:
         MIN_MEM: 1G
         MAX_MEM: 1G
         STOP: stop
-        JAR: server.jar
+        JAR: jar.jar
         REGEX: "Preparing spawn area:"
       ports:
         - 25565:25565

src/main.go

@@ -12,7 +12,6 @@ import (
 	"syscall"
 	"log"
 	"regexp"
-	"bytes"
 
 	"github.com/creack/pty"
 )
@@ -22,7 +21,6 @@ func main() {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGTERM)
 
-	//get environmental variables
 	var minram, maxram, args, stop, jar, regex string
 	for _, e := range os.Environ() {
 		pair := strings.SplitN(e, "=", 2)
@@ -42,24 +40,17 @@ func main() {
 		}
 	}
 
-	//create command
-	var cmdversion *exec.Cmd
-	cmdversion = exec.Command("java", "--version")
-	var out bytes.Buffer
-	cmdversion.Stdout = &out
-	cmdversion.Run()
-	log.Println(out.String())
 
 	log.Printf("Ram: Min: %s Max: %s Stop: %s Jar: %s\n\r", minram, maxram, stop, jar)
 
-	//check if there is a server jar
+	
+
 	if _, err := os.Stat("/server/"+jar); os.IsNotExist(err) {
 		log.Println("\033[31mJar \"" + jar + "\" not found\033[0m")
 		os.Exit(1)
 	}
 	
 	var cmd *exec.Cmd
-	
 	if args == "" {
 		cmd = exec.Command("java", minram, maxram, "-jar", jar)
 	} else {
@@ -67,18 +58,16 @@ func main() {
 		log.Printf("Args: %s \n\r", args)
 	}
 
-	//start server
+
 	cmd.Dir = "/server"
 	tty, err := pty.Start(cmd)
-	
+	ln, _ := net.Listen("tcp", ":8081")
+
 	if err != nil {
 		panic(err)
 	
 	}
 
-	ln, _ := net.Listen("tcp", ":8081")
-	
-	//cleanup
 	defer func() {
 		cmd.Process.Kill()
 		cmd.Process.Wait()
@@ -95,8 +84,6 @@ func main() {
 		}
 	}()
 
-	//accepts command from cmd.go and sends them to the server
-	
 	go func() {
 		//accept connections from clients
 		for {
@@ -108,7 +95,7 @@ func main() {
 		}
 	}()
 
-	//copy to standard out. If the the is a regex pattern, do output anything that matches
+	
 	go func() {
 		filter := regexp.MustCompile(regex)
 		if(regex != "") {
@@ -119,22 +106,20 @@ func main() {
 					fmt.Println(text)
 				}
 			}
-		} else { //don't filter
+		} else {
 			io.Copy(os.Stdout, tty)
 		}
 	}()
 
-	//copy stdin
 	go func() {
 		io.Copy(tty, os.Stdin)
 	}()
 
-	cmd.Wait() //wait for server to stop
+	cmd.Wait()
 	tty.Write([]byte("\033[31mServer Stopped\033[0m"))
 	os.Exit(0)
 }
 
-//take commands from cmd.go and send it to sdtin of the server
 func handleClient(conn net.Conn, tty *os.File) {
 	defer conn.Close()
 	cmd, _ := bufio.NewReader(conn).ReadString('\n')