Initial updates

pinpoint-agent-attach-example/java/.env

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+### Pinpoint with Java
+PINPOINT_VERSION=1.7.2
+AGENT_ID=app-in-docker
+APP_NAME=quickapp

pinpoint-agent-attach-example/java/Dockerfile

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+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

pinpoint-agent-attach-example/java/build/Sample.java

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+public class Sample {
+
+    public static void main(String[] args) {
+        System.out.println("Sample Java Start");
+        try {
+            while (true) {
+                Thread.sleep(1000);
+            }
+        }
+        catch (java.lang.InterruptedException e) {
+            System.out.println("Test Finished");
+        }
+    }
+}

pinpoint-agent-attach-example/java/docker-compose.yml

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+version: "2.1"
+
+services:
+  java:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        - PINPOINT_VERSION=${PINPOINT_VERSION}
+        - AGENT_ID=${AGENT_ID}
+        - APP_NAME=${APP_NAME}
+    container_name: "java"
+    image: "Your Image"
+
+    volumes_from:
+      - container:pinpoint-agent
+
+networks:
+  default:
+    external:
+      name: pinpoint-agent_pinpoint