Updating documentation for read only mode (#247)

Co-authored-by: andormarkus <andormarkus@marc-o-polo.com>

README.md

@@ -40,6 +40,7 @@ docker run -p 8080:8080 \
 
 ```
 Then access the web UI at [http://localhost:8080](http://localhost:8080).  
+Further configuration with environment variables - [see environment variables](#env_variables)  
  
 ### Docker Compose
 
@@ -138,10 +139,11 @@ kafka:
 * `schemaRegistry`: schemaRegistry's address
 * `schemaNameTemplate`: how keys are saved to schemaRegistry
 * `jmxPort`: open jmxPosrts of a broker
+* `readOnly`: enable read only mode
 
 Configure as many clusters as you need by adding their configs below separated with `-`.
 
-## Environment Variables
+## <a name="env_variables"></a> Environment Variables
 
 Alternatively, each variable of of the .yml file can be set with an environment variable. 
 For example, if you want to use an environment variable to set the `name` parameter, you can write it like this: `KAFKA_CLUSTERS_2_NAME`
@@ -154,6 +156,7 @@ For example, if you want to use an environment variable to set the `name` parame
 |`KAFKA_CLUSTERS_0_SCHEMAREGISTRY`   	|SchemaRegistry's address
 |`KAFKA_CLUSTERS_0_SCHEMANAMETEMPLATE`  |How keys are saved to schemaRegistry
 |`KAFKA_CLUSTERS_0_JMXPORT`        	|Open jmxPosrts of a broker
+|`KAFKA_CLUSTERS_0_READONLY`        	|Enable read only mode. Default: false
 
  
 

docker-compose.md

@@ -1,5 +1,7 @@
 # Quick Start with docker-compose
 
+Envinronment variables documentation - [see usage](README.md#env_variables) 
+
 * Add a new service in docker-compose.yml
 
 ```yaml
@@ -9,14 +11,31 @@ services:
     image: provectuslabs/kafka-ui
     container_name: kafka-ui
     ports:
-      - "9000:8080"
+      - "8080:8080"
     restart: always
     environment:
-      -e KAFKA_CLUSTERS_0_NAME=local
-      -e KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS=kafka:9092
-      -e KAFKA_CLUSTERS_0_ZOOKEEPER=localhost:2181
+      - KAFKA_CLUSTERS_0_NAME=local
+      - KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS=kafka:9092
+      - KAFKA_CLUSTERS_0_ZOOKEEPER=localhost:2181
 ```
 
+* If you prefer Kafka UI in read only mode
+   
+```yaml
+version: '2'
+services:
+  kafka-ui:
+    image: provectuslabs/kafka-ui
+    container_name: kafka-ui
+    ports:
+      - "8080:8080"
+    restart: always
+    environment:
+      - KAFKA_CLUSTERS_0_NAME=local
+      - KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS=kafka:9092
+      - KAFKA_CLUSTERS_0_ZOOKEEPER=localhost:2181
+      - KAFKA_CLUSTERS_0_READONLY=true
+```
   
 * Start Kafka UI process