add issue template

.github/ISSUE_TEMPLATE/ISSUE_TEMPLATE.md

@@ -11,30 +11,27 @@ assignees: ''
 Note: Please search to see if an issue already exists for the bug you encountered.
 -->
 
-### Current Behavior:
+### Environment:
-<!-- A concise description of what you're experiencing. -->
+<!-- linux? windows? or Mac?
+Example:
+- OS: Ubuntu 20.04 -->
 
-### Expected Behavior:
+### Physical Memory Capacity:
-<!-- A concise description of what you expected to happen. -->
+<!-- 8G or above is better -->
 
-### Steps To Reproduce:
+### Docker Image:
-<!--
+<!-- Did you pull the docker image before execute docker images -->
-Example: steps to reproduce the behavior:
-1. In this environment...
-2. With this config...
-3. Run '...'
-4. See error...
--->
 
-### Environment:
+### Code Version:
-<!--
+<!-- Did you pull code from github? Make sure the code is up to date-->
-Example:
-- OS: Ubuntu 20.04
-- Node: 13.14.0
-- npm: 7.6.3
--->
 
-### Anything else:
+### Component installation:
-<!--
+<!-- Has etcd, mysql, mongodb, redis or Kafka been installed on the server before Open-IM-Server deployment-->
-Links? References? Anything that will give us more context about the issue that you are encountering!
+
--->
+
+### Log File:
+<!-- view log file(logs/openIM.log) content. -->
+
+
+### Anything else screenshot:
+<!---->