Add dockerfile for wildfly (linux-on-ibm-z#21)

* Create LICENSE

* Create Dockerfile

* Create README.md

Author: sankalp-sde

w/wildfly/Dockerfiles/32.0.0_ubi9/Dockerfile

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+FROM registry.access.redhat.com/ubi9/ubi-minimal:9.3
+
+RUN  microdnf install --best --nodocs -y tar gzip zip shadow-utils && microdnf clean all
+
+WORKDIR /opt/jboss
+
+RUN groupadd -r jboss -g 1000 && useradd -u 1000 -r -g jboss -m -d /opt/jboss -s /sbin/nologin -c "JBoss user" jboss && \
+    chmod 755 /opt/jboss
+
+# Set the PACKAGE_VERSION env variable
+ENV PACKAGE_VERSION 32.0.0.Final
+ENV WILDFLY_SHA1=9b6d762aa4662045fc3e7329a1ed1c0d457daf6d
+ENV JBOSS_HOME /opt/jboss/wildfly
+
+USER root
+
+# Add the WildFly distribution to /opt, and make wildfly the owner of the extracted tar content
+# Make sure the distribution is available from a well-known place
+RUN cd $HOME \
+    && curl -L -O https://github.com/wildfly/wildfly/releases/download/$PACKAGE_VERSION/wildfly-$PACKAGE_VERSION.tar.gz \
+    && sha1sum wildfly-$PACKAGE_VERSION.tar.gz | grep $WILDFLY_SHA1 \
+    && tar -xf wildfly-$PACKAGE_VERSION.tar.gz \
+    && mv $HOME/wildfly-$PACKAGE_VERSION $JBOSS_HOME \
+    && rm wildfly-$PACKAGE_VERSION.tar.gz \
+    && chown -R jboss:0 ${JBOSS_HOME} \
+    && chmod -R g+rw ${JBOSS_HOME}
+
+# Ensure signals are forwarded to the JVM process correctly for graceful shutdown
+ENV LAUNCH_JBOSS_IN_BACKGROUND true
+
+USER jboss
+
+# Expose the ports in which we're interested
+EXPOSE 8080
+
+# Set the default command to run on boot
+# This will boot WildFly in standalone mode and bind to all interfaces
+CMD ["/opt/jboss/wildfly/bin/standalone.sh", "-b", "0.0.0.0"]

w/wildfly/Dockerfiles/32.0.0_ubi9/README.md

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+To build a Dockerfile: docker build -t wildlfy .
+
+To run a dockerfile: docker run -it -p 8080:8080 -p 9990:9990 -d wildlfy