Minor updates

README.md

@@ -51,20 +51,48 @@ The following table lists the configurable parameters of the Hadoop chart and th
 | `persistence.dataNode.size`            | Size of the volume                                             | `200Gi`                                                           |
 
 
+---
+
+## Customized Hadoop Base Docker Image
+
+This image is modified from [comcast/kube-yarn](https://github.com/Comcast/kube-yarn/tree/add-hadoop-image-versions) and [mgit-at/helm-hadoop-3](https://github.com/mgit-at/helm-hadoop-3). Currently, native libraries are not been included.
+
+### Build and Push the Docker Image
+
+```bash
+# Set version
+HADOOP_VERSION=3.3.2
+
+# Build
+docker buildx build --push --platform "linux/arm64,linux/amd64" -t farberg/apache-hadoop:latest -t farberg/apache-hadoop:$HADOOP_VERSION .
+```
+
+### Testing with minikube
+
+If you are running locally with minikube and want to try your images without pushing them to a registry, build the images on the minikube VM first:
+
+```bash
+eval $(minikube docker-env)
+# use the build command from above
+```
+
+---
+
 ## Development
 
 Help is always appreciated. Please create pull requests.
 
 ### Open Issues
 
 - Include native libraries
+- List of ports needs to be updated (cf. https://www.oreilly.com/library/view/big-data-analytics/9781788628846/5c5821cc-4a3d-498a-a3eb-23256cd79c8b.xhtml)
 
 ### Upload a new version of the chart
 
 ```bash
 helm lint
 helm package .
-mv apache-hadoop-helm-*.tgz docs/
+mv hadoop*.tgz docs/
 helm repo index docs/ --url https://pfisterer.github.io/apache-hadoop-helm/
 git add docs/
 git commit -a -m "Updated helm repository"

docs/index.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+entries:
+  hadoop:
+  - apiVersion: v1
+    appVersion: 3.3.2
+    created: "2022-03-21T16:15:24.698221+01:00"
+    description: The Apache Hadoop software library is a framework that allows for
+      the distributed processing of large data sets across clusters of computers using
+      simple programming models.
+    digest: 5e655a09f2e502dfaf6350333698e6969c796ff4fefa15cc6e1b0b4f82f9e05e
+    home: https://hadoop.apache.org/
+    icon: http://hadoop.apache.org/images/hadoop-logo.jpg
+    maintainers:
+    - email: [email protected]
+      name: pfisterer
+      url: http://github.com/pfisterer
+    name: hadoop
+    sources:
+    - https://github.com/pfisterer/apache-hadoop-helm
+    - https://github.com/apache/hadoop
+    urls:
+    - https://pfisterer.github.io/apache-hadoop-helm/hadoop-1.2.0.tgz
+    version: 1.2.0
+generated: "2022-03-21T16:15:24.697105+01:00"

image/Dockerfile

@@ -1,4 +1,4 @@
-FROM openjdk:8-jre
+FROM openjdk:8-jdk
 
 ENV HADOOP_VERSION 3.3.2
 ENV HADOOP_HOME=/opt/hadoop