Oracle jdk installs are broken (404). Use openjdk

Dockerfile.server

@@ -32,14 +32,19 @@ COPY *.sh ./
 COPY tensorflow-cpu/ tensorflow-cpu/
 RUN pip3 uninstall -y tensorflow && pip3 install tensorflow-cpu/tensorflow-1.3.1-cp35-cp35m-linux_x86_64.whl
 
-# Install java dependencies and supervisor
+# Install supervisor
 RUN apt-get install software-properties-common python-software-properties supervisor -y && \
-    mkdir -p /var/log/supervisor && \
-    add-apt-repository ppa:webupd8team/java -y && \
-    apt-get update -y && \
-    echo debconf shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \
-    echo debconf shared/accepted-oracle-license-v1-1 seen true | debconf-set-selections && \
-    apt-get install oracle-java8-installer oracle-java8-set-default -y
+    mkdir -p /var/log/supervisor
+
+# Install java
+RUN apt-get install openjdk-8-jdk -y
+# Better perf from oracle jdk but this dependency just 404'd on 2018-10-16
+# Same was true when I tried ppa:linuxuprising/java for java10
+#     add-apt-repository ppa:webupd8team/java -y && \
+#     apt-get update -y && \
+#     echo debconf shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \
+#     echo debconf shared/accepted-oracle-license-v1-1 seen true | debconf-set-selections && \
+#     apt-get install oracle-java8-installer oracle-java8-set-default -y
 
 COPY supervisord.conf supervisord.conf