Update usage, docker first.

README.md

@@ -44,6 +44,21 @@ Done! Play the following streams by players:
 
 > The online demos and players are available on [ossrs.net](https://ossrs.net).
 
+**>>> From here,** strongly recommend to read bellow wikis:
+
+* Usage: How to delivery RTMP?([CN][v1_CN_SampleRTMP], [EN][v1_EN_SampleRTMP])
+* Usage: How to delivery RTMP Edge Cluster?([CN][v3_CN_SampleRTMPCluster], [EN][v3_EN_SampleRTMPCluster])
+* Usage: How to create a RTMP Origin Cluster?([CN][v3_CN_SampleOriginCluster], [EN][v3_EN_SampleOriginCluster])
+* Usage: How to delivery HTTP FLV Live Streaming?([CN][v3_CN_SampleHttpFlv], [EN][v3_EN_SampleHttpFlv])
+* Usage: How to delivery HTTP FLV Live Streaming Cluster?([CN][v3_CN_SampleHttpFlvCluster], [EN][v3_EN_SampleHttpFlvCluster])
+* Usage: How to delivery HLS?([CN][v3_CN_SampleHLS], [EN][v3_EN_SampleHLS])
+* Usage: How to transode RTMP stream by FFMPEG?([CN][v2_CN_SampleFFMPEG], [EN][v2_EN_SampleFFMPEG])
+* Usage: How to forward stream to other servers?([CN][v3_CN_SampleForward], [EN][v3_EN_SampleForward])
+* Usage: How to deploy in low lantency mode?([CN][v3_CN_SampleRealtime], [EN][v3_EN_SampleRealtime])
+* Usage: How to ingest file/stream/device to RTMP?([CN][v1_CN_SampleIngest], [EN][v1_EN_SampleIngest])
+* Usage: How to improve edge performance for multiple CPUs? ([CN][v3_CN_REUSEPORT], [EN][v3_EN_REUSEPORT])
+* Usage: How to file a bug or contact us? ([CN][v1_CN_Contact], [EN][v1_EN_Contact])
+
 It's also very easy to build from source:
 
 **>>> Step 1:** Get SRS.
@@ -72,21 +87,6 @@ git checkout 3.0release && git pull
 ./objs/srs -c conf/srs.conf
 ```
 
-**>>> From here,** strongly recommend to read bellow wikis:
-
-* Usage: How to delivery RTMP?([CN][v1_CN_SampleRTMP], [EN][v1_EN_SampleRTMP])
-* Usage: How to delivery RTMP Edge Cluster?([CN][v3_CN_SampleRTMPCluster], [EN][v3_EN_SampleRTMPCluster])
-* Usage: How to create a RTMP Origin Cluster?([CN][v3_CN_SampleOriginCluster], [EN][v3_EN_SampleOriginCluster])
-* Usage: How to delivery HTTP FLV Live Streaming?([CN][v3_CN_SampleHttpFlv], [EN][v3_EN_SampleHttpFlv])
-* Usage: How to delivery HTTP FLV Live Streaming Cluster?([CN][v3_CN_SampleHttpFlvCluster], [EN][v3_EN_SampleHttpFlvCluster])
-* Usage: How to delivery HLS?([CN][v3_CN_SampleHLS], [EN][v3_EN_SampleHLS])
-* Usage: How to transode RTMP stream by FFMPEG?([CN][v2_CN_SampleFFMPEG], [EN][v2_EN_SampleFFMPEG])
-* Usage: How to forward stream to other servers?([CN][v3_CN_SampleForward], [EN][v3_EN_SampleForward])
-* Usage: How to deploy in low lantency mode?([CN][v3_CN_SampleRealtime], [EN][v3_EN_SampleRealtime])
-* Usage: How to ingest file/stream/device to RTMP?([CN][v1_CN_SampleIngest], [EN][v1_EN_SampleIngest])
-* Usage: How to improve edge performance for multiple CPUs? ([CN][v3_CN_REUSEPORT], [EN][v3_EN_REUSEPORT])
-* Usage: How to file a bug or contact us? ([CN][v1_CN_Contact], [EN][v1_EN_Contact])
-
 <a name="srs-30-wiki"></a>
 ## Wiki