modify

Dockerfile

@@ -1,6 +1,9 @@
 FROM openjdk:8-jre-alpine
-WORKDIR /usr/src/myapp
-ENV PASSIVE_ADDRESS=127.0.0.1 PASSIVE_PORTS=40000-40060
+WORKDIR /zy-ftp
+ENV LOCAL_IP 0.0.0.0
+ENV LOCAL_PORT 21
+ENV PASSIVE_ADDRESS 127.0.0.1
+ENV PASSIVE_PORTS 40000-40060
 COPY target/zy-ftp.jar zy-ftp.jar
-CMD ["sh", "-c", "java -jar zy-ftp.jar -c server.config -l zy-ftp.log --passive-address $PASSIVE_ADDRESS --passive-ports $PASSIVE_PORTS"]
-EXPOSE 8021
+CMD ["sh", "-c", "java -jar zy-ftp.jar -c server.config -l zy-ftp.log --passive-address $PASSIVE_ADDRESS --passive-ports $PASSIVE_PORTS --local-ip $LOCAL_IP --local-port $LOCAL_PORT"]
+EXPOSE 21

src/main/java/io/github/yangziwen/zyftp/config/FtpServerConfig.java

@@ -8,7 +8,6 @@
 
 import java.io.File;
 import java.net.InetSocketAddress;
-import java.net.SocketAddress;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 
@@ -47,7 +46,7 @@ public class FtpServerConfig {
 
 	private static final String DEFAULT_HOME_DIRECTORY = "res/";
 
-	private SocketAddress localAddress;
+	private InetSocketAddress localAddress;
 
 	private int maxLogins;
 

src/main/java/io/github/yangziwen/zyftp/main/Main.java

@@ -1,6 +1,7 @@
 package io.github.yangziwen.zyftp.main;
 
 import java.io.File;
+import java.net.InetSocketAddress;
 
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
@@ -31,6 +32,18 @@ public class Main {
 			required = false)
 	private File logFile = new File("log/zy-ftp.log");
 
+	@Parameter(
+			names = {"--local-ip"},
+			description = "specify the local ip",
+			required = false)
+	private String localIp;
+
+	@Parameter(
+			names = {"--local-port"},
+			description = "specify the local port",
+			required = false)
+	private Integer localPort;
+
 	@Parameter(
 			names = {"--passive-address"},
 			description = "specify the passive address",
@@ -80,6 +93,15 @@ public void run() throws Exception {
 
 		FtpServerContext context = new FtpServerContext(configFile);
 
+		InetSocketAddress address = context.getServerConfig().getLocalAddress();
+		if (StringUtils.isNotBlank(localIp) && !localIp.equals(address.getHostString())) {
+			address = new InetSocketAddress(localIp, address.getPort());
+			context.getServerConfig().setLocalAddress(address);
+		}
+		if (localPort != null && !localPort.equals(address.getPort())) {
+			address = new InetSocketAddress(address.getHostString(), localPort);
+			context.getServerConfig().setLocalAddress(address);
+		}
 		if (StringUtils.isNotBlank(passiveAddress)) {
 			context.getServerConfig().setPassiveAddress(passiveAddress);
 		}