Added default Dockerfile, based on Dockerfile-base-ubuntu

docker/Dockerfile

@@ -0,0 +1,29 @@
+# Dockerfile for universalresolver/base-ubuntu
+
+FROM ubuntu:18.04
+MAINTAINER Markus Sabadello <markus@danubetech.com>
+
+USER root
+
+RUN apt-get -y update && \
+    apt-get install -y --no-install-recommends openjdk-8-jdk-headless maven git && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
+ENV PATH $JAVA_HOME/bin:$PATH
+
+# build dependencies
+
+RUN cd /opt/ && git clone https://github.com/decentralized-identity/did-common-java.git
+RUN cd /opt/did-common-java/ && mvn clean install -DskipTests
+
+RUN mvn org.apache.maven.plugins:maven-dependency-plugin:3.1.1:get -DrepoUrl=https://repo.maven.apache.org/maven2 -Dartifact=org.eclipse.jetty:jetty-maven-plugin:9.4.18.v20190429
+RUN mvn org.apache.maven.plugins:maven-dependency-plugin:3.1.1:get -DrepoUrl=https://repo.maven.apache.org/maven2 -Dartifact=org.apache.maven.plugins:maven-war-plugin:3.2.2
+
+# build driver
+
+ADD ./resolver/java/ /opt/uni-resolver-java
+
+RUN cd /opt/uni-resolver-java && mvn clean install -N -DskipTests && mvn clean && \
+    cd /opt/uni-resolver-java/uni-resolver-core && mvn clean install -N -DskipTests && mvn clean && \
+    cd /opt/uni-resolver-java/driver && mvn clean install -N -DskipTests && mvn clean