Add examples for nodejs and image

examples/README.md

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+# Examples
+- Say Hello to Docker with Nodejs

examples/sayhello/.gitignore

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+node_modules/
+yarn.lock
+package-lock.json

examples/sayhello/Dockerfile

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+FROM cubetiq/calpine-node:latest
+LABEL maintainer="sombochea@cubetiqs.com"
+
+WORKDIR /usr/src/app
+
+COPY . /usr/src/app
+
+RUN yarn
+
+CMD [ "node" , "index.js"]

examples/sayhello/Makefile

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+DOCKER_IMAGE=cubetiq/node-sayHello
+
+build:
+	@echo "Building docker image..."
+	docker build . -t ${DOCKER_IMAGE}
+
+run:
+	@echo "Running container..."
+	docker run --rm -t ${DOCKER_IMAGE}
+
+.PHONY: build run

examples/sayhello/index.js

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+const sayHello = () => {
+    console.log("sayHello => ", "Hi, I'm from CUBETIQ Solution!");
+
+    return Math.random();
+}
+
+console.log(sayHello())

examples/sayhello/package.json

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+{
+  "name": "sayhello",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Sambo Chea <sombochea@cubetiqs.com>",
+  "license": "MIT"
+}