feat(docker): dealing with the change of docker in kubenetes 1.20

Author: duanhongyi

src/contributing/development-environment.md

@@ -158,22 +158,22 @@ export DRYCC_REGISTRY=<IP of the host machine>:5000
 In non-Linux environments:
 
 ```
-export DRYCC_REGISTRY=<IP of the drycc-docker Docker Machine VM>:5000/
+export DRYCC_REGISTRY=<IP of the drycc-docker Docker Machine VM>:5000
 ```
 
 If your development cluster runs on a cloud provider such as Google Container Engine, a local registry such as the one above will not be accessible to your Kubernetes nodes.  In such cases, a public registry such as [DockerHub][dh] or [quay.io][quay] will suffice.
 
 To use DockerHub for this purpose, for instance:
 
 ```
-$ export DRYCC_REGISTRY=""
+$ export DRYCC_REGISTRY="docker.io"
 $ export IMAGE_PREFIX=<your DockerHub username>
 ```
 
 To use quay.io:
 
 ```
-$ export DRYCC_REGISTRY=quay.io/
+$ export DRYCC_REGISTRY=quay.io
 $ export IMAGE_PREFIX=<your quay.io username>
 ```
 

src/installing-workflow/index.md

@@ -73,21 +73,21 @@ If you want to change it, set the variable when using helm.
 
 ```
 $ helm install --namespace drycc \
-    --set builder.image_registry=quay.io/ \
-    --set slugbuilder.image_registry=quay.io/ \
-    --set imagebuilder.image_registry=quay.io/ \
-    --set controller.image_registry=quay.io/ \
-    --set slugrunner.image_registry=quay.io/ \
-    --set database.image_registry=quay.io/ \
-    --set fluentd.image_registry=quay.io/ \
-    --set redis.image_registry=quay.io/ \
-    --set influxdb.image_registry=quay.io/ \
-    --set logger.image_registry=quay.io/ \
-    --set minio.image_registry=quay.io/ \
-    --set monitor.image_registry=quay.io/ \
-    --set nsqd.image_registry=quay.io/ \
-    --set registry.image_registry=quay.io/ \
-    --set registry-proxy.image_registry=quay.io/ \
+    --set builder.image_registry=quay.io \
+    --set slugbuilder.image_registry=quay.io \
+    --set imagebuilder.image_registry=quay.io \
+    --set controller.image_registry=quay.io \
+    --set slugrunner.image_registry=quay.io \
+    --set database.image_registry=quay.io \
+    --set fluentd.image_registry=quay.io \
+    --set redis.image_registry=quay.io \
+    --set influxdb.image_registry=quay.io \
+    --set logger.image_registry=quay.io \
+    --set minio.image_registry=quay.io \
+    --set monitor.image_registry=quay.io \
+    --set nsqd.image_registry=quay.io \
+    --set registry.image_registry=quay.io \
+    --set registry-proxy.image_registry=quay.io \
     --set global.platform_domain=drycc.cc \
     drycc/workflow
 ```