[skywalking-docker] 20/45: Update readme of 6.1.0

[wusheng]

This is an automated email from the ASF dual-hosted git repository.

wusheng pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/skywalking-docker.git

commit 4afbf77b31bd245cdb8638a95d020c004807fb62
Author: Gao Hongtao <hanahm...@gmail.com>
AuthorDate: Wed Jul 3 16:40:26 2019 +0800

    Update readme of 6.1.0
---
 6/6.1/oap/README.md | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/6/6.1/oap/README.md b/6/6.1/oap/README.md
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+# Apache SkyWalking OAP Server Docker Files
+
+<img src="http://skywalking.apache.org/assets/logo.svg"; alt="Sky Walking logo" 
height="90px" align="right" />
+
+**SkyWalking**: an APM(application performance monitor) system, especially 
designed for 
+microservices, cloud native and container-based (Docker, Kubernetes, Mesos) 
architectures.
+
+# How to use this image
+
+## Start a `standlone` container with `H2` storage
+
+```
+$ docker run --name oap --restart always -d apache/skywalking-oap-server:6.1.0
+```
+
+## Start a `standlone` container with `elasticsearch` storage whose address is 
`elasticsearch:9200`
+
+```
+$ docker run --name oap --restart always -d -e SW_STORAGE=elasticsearch -e 
SW_STORAGE_ES_CLUSTER_NODES=elasticsearch:9200 
apache/skywalking-oap-server:6.1.0
+```
+
+# Configuration
+
+We could set up environment variables to configure this image. Most of them 
are defined in 
[backend-setup](https://github.com/apache/skywalking/blob/v6.1.0/docs/en/setup/backend/backend-setup.md),
 but Apache SkyWalking Docker Image adds extra environment variables to help 
the user to compose it properly. The details are located in 
[docker-entrypoint.sh](docker-entrypoint.sh)
+
+## SW_CLUSTER
+Default value is `standalone`, avaliable values are:
+
+ - `standlone`, If set this value, all enviroment variables of 
`cluster.standlone` in `application.yml` are avaliable.
+ - `zookeeper`, If set this value, all enviroment variables of 
`cluster.zookeeper` in `application.yml` are avaliable.
+ - `kubernetes`, If set this value, all enviroment variables of 
`cluster.kubernetes` in `application.yml` are avaliable.
+ - `consul`, If set this value, all enviroment variables of `cluster.consul` 
in `application.yml` are avaliable.
+ 
+## SW_STORAGE
+Default value is `H2`, avaliable values are:
+
+ - `H2`, If set this value, all enviroment variables of `storage.h2` in 
`application.yml` are avaliable.
+ - `elasticsearch`, If set this value, all enviroment variables of 
`stroage.elasticsearch` in `application.yml` are avaliable.
+ - `mysql`, If set this value, all enviroment variables of `stroage.mysql` in 
`application.yml` are avaliable.
+ 
+## XXX_ENABLED
+
+There are also some other configuration switchers to extend default 
configuration, they also have a suffix `_ENABLED`.
+
+ - `SW_RECEIVER_ZIPKIN_ENABLED` turns on/off zipkin receiver
+ - `SW_RECEIVER_JAEGER_ENABLED` turns on/off jaeger receiver
+ - `SW_EXPORTER_ENABLED`  turns on/off exporter
+
+# License
+[Apache 2.0 License.](/LICENSE)