Uses ENTRYPOINT in Dockerfile instead of command in manifest

Dockerfile

@@ -3,3 +3,4 @@ ENV KAFKA_VERSION=2.3.0
 ENV KAFKA_CLI_DIR=/opt/kafka/bin
 ENV PATH=/opt/kafka-toolbox:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 COPY bin /opt/kafka-toolbox
+ENTRYPOINT ["tail", "-f", "/dev/null"]

README.md

@@ -49,6 +49,20 @@ them explicitly when you log into the container.
 
 ### Run it on Kubernetes
 
+Create single pod - without a deployment:
+```
+$ kubectl run kafka-toolbox --image=itadventurer/kafka-toolbox:latest --env="KAFKA_BOOTSTRAP_SERVERS={{kafka-url}}" --env="KAFKA_ZOOKEEPER={{zookeeper-url}}"
+```
+
+Then:
+```
+$ kubectl exec -it kafka-toolbox -- /bin/bash
+```
+
+**Note:** You can pass additional parameter `--namespace=<your-desired-namespace>` to the above kubectl commands.
+
+Alternatively, you can use the manifest files
+
 1. Download your appropriate yaml file and configure as described below.
 2. `kubectl apply -f my.yaml`
 3. `kubectl run -it kafka-toolbox bash`
@@ -107,8 +121,7 @@ For Kubernetes deployments you can use following templates:
 * [./assets/toolbox-plaintext-zookeeper-sidecar.yaml](./assets/toolbox-plaintext-zookeeper-sidecar.yaml):
   if you use a sidecar to encrypt zookeeper traffic
 
-Do not forget to replace all values in `{{curly-brackets}}` by
-appropriate values!
+Do not forget to replace all values in `{{curly-brackets}}` by appropriate values!
 
 #### Mutual TLS
 

assets/toolbox-mutual-tls-zookeeper-sidecar.yaml

@@ -24,9 +24,6 @@ spec:
       - name: cluster-ca-cert
         mountPath: "/var/private/ssl/kafka-cluster-ca-certs"
         readOnly: true
-      command:
-        - sleep
-        - infinity
     - name: tls-sidecar
       image: 'strimzi/entity-operator-stunnel:0.11.3'
       env:

assets/toolbox-mutual-tls.yaml

@@ -24,9 +24,6 @@ spec:
       - name: cluster-ca-cert
         mountPath: "/var/private/ssl/kafka-cluster-ca-certs"
         readOnly: true
-      command:
-        - sleep
-        - infinity
   volumes:
     - name: cluster-ca-cert
       secret:

assets/toolbox-plaintext-zookeeper-sidecar.yaml

@@ -12,9 +12,6 @@ spec:
         - name: KAFKA_ZOOKEEPER
           # Do not change! This is the sidecar connection URL
           value: "localhost:2181"
-      command:
-        - sleep
-        - infinity
     - name: tls-sidecar
       image: 'strimzi/entity-operator-stunnel:0.11.3'
       env:

assets/toolbox-plaintext.yaml

@@ -11,6 +11,3 @@ spec:
           value: "{{kafka-url}}"
         - name: KAFKA_ZOOKEEPER
           value: "{{zookeeper-url}}"
-      command:
-        - sleep
-        - infinity