Update logstash-springboot.conf

document/elk/logstash-springboot.conf

 input {
-    tcp {
-        port => 4560
-        codec => json_lines
-    }
+  tcp {
+    mode => "server"
+    host => "0.0.0.0"
+    port => 4560
+    codec => json_lines
+  }
 }
-output{
-  elasticsearch { hosts => ["localhost:9200"] }
-  stdout { codec => rubydebug }
+output {
+  elasticsearch {
+    hosts => "es:9200"
+    index => "springboot-logstash-%{+YYYY.MM.dd}"
+  }
 }
\ No newline at end of file