Merge pull request #8 from beevelop/fix-jdk-installation

Use JDK 8 instead of JRE

Author: beevelop

Dockerfile

@@ -1,34 +1,9 @@
 FROM beevelop/base
 
-ARG BUILD_DATE
-ARG BUILD_VERSION
-ARG VCS_REF
-
-LABEL maintainer="Maik Hummel <hi@beevelop.com>" \
-  org.label-schema.build-date=$BUILD_DATE \
-  org.label-schema.version=$BUILD_VERSION \
-  org.label-schema.vcs-ref=$VCS_REF \
-  org.label-schema.schema-version="1.0" \
-  org.label-schema.vcs-url="https://github.com/beevelop/docker-java.git" \
-  org.label-schema.name="beevelop/java" \
-  org.label-schema.vendor="Maik Hummel (beevelop)" \
-  org.label-schema.description="Simple Java Docker image (used as base image)" \
-  org.label-schema.url="https://beevelop.com/" \
-  org.label-schema.license="MIT" \
-  org.opencontainers.image.title="beevelop/java" \
-  org.opencontainers.image.description="Simple Java Docker image (used as base image)" \
-  org.opencontainers.image.licenses="MIT" \
-  org.opencontainers.image.authors="Maik Hummel (beevelop)" \
-  org.opencontainers.image.vendor="Maik Hummel (beevelop)" \
-  org.opencontainers.image.url="https://github.com/beevelop/docker-java" \
-  org.opencontainers.image.documentation="https://github.com/beevelop/docker-java/blob/master/README.md" \
-  org.opencontainers.image.source="https://github.com/beevelop/docker-java.git"
-
-# required to use add-apt-repository
 RUN apt-get update && \
-    apt-get -y install default-jre-headless && \
+    apt-get -y install openjdk-8-jdk-headless && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
     java -version
 
-ENV JAVA_HOME /usr/lib/jvm/java-11-openjdk-amd64
+ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64

README.md

@@ -5,28 +5,36 @@
 ![Badges](https://shields.beevelop.com/badge/badges-7-brightgreen.svg?style=flat-square)
 [![Beevelop](https://links.beevelop.com/honey-badge)](https://beevelop.com)
 
-
 ![beevelop/java](/icon.png?raw=true)
-# Java / OpenJDK 11.0.10
+
+# Java / OpenJDK 1.8.0
+
 ### based on Ubuntu 20.04.
+
 > ⚠ This image formerly used the Oracle Java version. But due the license changes since April 2019, it's not longer feasible to rely on. This image is now using OpenJDK 11.
-----
+
+---
+
 ### Pull from Docker Hub
+
 ```
 docker pull beevelop/java:latest
 ```
 
 ### Build from GitHub
+
 ```
 docker build -t beevelop/java github.com/beevelop/docker-java
 ```
 
 ### Run image
+
 ```
 docker run -it beevelop/java bash
 ```
 
 ### Use as base image
+
 ```Dockerfile
 FROM beevelop/java:latest
 ```