Adopt open jdk

Switched to AdoptOpenJDK (https://adoptopenjdk.net/)

Dockerfile

@@ -12,18 +12,20 @@ RUN apt-key adv --keyserver keyserver.ubuntu.com --recv E1DD270288B4E6030699E45F
  && apt-get update \
  && apt-get upgrade -y \
  && apt-get clean
+ 
 
 # Download latest JDK 8
 
-RUN apt-get install -y software-properties-common \
- && add-apt-repository ppa:openjdk-r/ppa \
+RUN wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | sudo apt-key add - \
+ && apt-get install -y software-properties-common \
+ && add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ \
  && apt-get update \
  && apt-get install -y tzdata \
  && apt-get install -y zip \
  && apt-get install -y curl \
  && apt-get install -y htop \
  && apt-get install -y jq \
- && apt-get install -y openjdk-8-jdk \
+ && apt-get install -y adoptopenjdk-8-hotspot \
  && apt-get clean
      
 COPY assets/resources/ /opt/