Initial updates

pinpoint-agent-attach-example/java/Dockerfile

@@ -0,0 +1,15 @@
+FROM java:8
+
+LABEL maintainer="Roy Kim <roy.kim@navercorp.com>"
+
+ARG PINPOINT_VERSION
+ARG AGENT_ID
+ARG APP_NAME
+ENV JAVA_OPTS="-javaagent:/pinpoint-agent/pinpoint-bootstrap-${PINPOINT_VERSION}.jar -Dpinpoint.agentId=${AGENT_ID} -Dpinpoint.applicationName=${APP_NAME}"
+
+RUN mkdir -p javasample
+COPY build/Sample.java javasample
+WORKDIR javasample
+
+RUN javac Sample.java
+CMD java ${JAVA_OPTS} Sample