add Dockerfile examples (#149)

* add Dockerfile examples

* specify nodejs dockerfile version

README.md

@@ -38,8 +38,11 @@ Follow these steps to get started:
   The basic idea is that you'll have one stage to build your application artifacts, and insert them into your runtime distroless image.
   If you'd like to learn more, please see the documentation on [multi-stage builds](https://docs.docker.com/engine/userguide/eng-image/multistage-build/).
 
-  Here's a quick example.
-  ```
+
+#### Examples with Docker
+  Here's a quick example for go:
+
+  ```dockerfile
   # Start by building the application.
   FROM golang:1.8 as build
 
@@ -55,6 +58,22 @@ Follow these steps to get started:
   CMD ["/app"]
   ```
 
+You can find other examples here:
+
+
+* [Java](examples/java/Dockerfile)
+* [Python](examples/python2.7/Dockerfile)
+* [Python 3](examples/python3/Dockerfile)
+* [Golang](examples/go/Dockerfile)
+* [Node.js](examples/nodejs/Dockerfile)
+* [dotnet](examples/dotnet/Dockerfile)
+
+To run any example, go the the directory for the language and run
+```
+docker build -t myapp .
+docker run -t myapp
+```
+
 ### Bazel
 
 For full documentation on how to use bazel to generate Docker images, see the [bazelbuild/rules_docker](http://github.com/bazelbuild/rules_docker) repository.
@@ -63,7 +82,7 @@ For documentation and examples on how to use the bazel package manager rules, se
 
 Examples can be found in this repository in the [examples](examples/) directory.
 
-## Examples
+#### Examples with Bazel
 
 We have some examples on how to run some common application stacks in the /examples directory.
 See here for:

examples/dotnet/Dockerfile

@@ -0,0 +1,11 @@
+FROM microsoft/dotnet:2.0.0-sdk AS build-env
+ADD . /app
+WORKDIR /app
+RUN dotnet restore -r linux-x64
+RUN dotnet publish  -c Release -r linux-x64
+
+FROM gcr.io/distroless/dotnet
+WORKDIR /app
+COPY --from=build-env /app /app/
+#CMD ["dotnet", "bin/Release/netcoreapp2.0/linux-x64/publish/hello.dll"]
+CMD ["bin/Release/netcoreapp2.0/linux-x64/publish/hello"]

examples/go/Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.8 as build-env
+
+WORKDIR /go/src/app
+ADD . /go/src/app
+
+RUN go-wrapper download   # "go get -d -v ./..."
+RUN go-wrapper install
+
+FROM gcr.io/distroless/base
+COPY --from=build-env /go/bin/app /
+CMD ["/app"]

examples/java/Dockerfile

@@ -0,0 +1,10 @@
+FROM openjdk:8-jdk-slim AS build-env
+ADD . /app/examples
+WORKDIR /app
+RUN javac examples/*.java
+RUN jar cfe main.jar examples.HelloJava examples/*.class 
+
+FROM gcr.io/distroless/java
+COPY --from=build-env /app /app
+WORKDIR /app
+CMD ["main.jar"]

examples/nodejs/Dockerfile

@@ -0,0 +1,8 @@
+FROM node:8.9.1 AS build-env
+ADD . /app
+WORKDIR /app
+
+FROM gcr.io/distroless/nodejs
+COPY --from=build-env /app /app
+WORKDIR /app
+CMD ["hello.js"]

examples/python2.7/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:2.7-slim AS build-env
+ADD . /app
+WORKDIR /app
+
+FROM gcr.io/distroless/python2.7
+COPY --from=build-env /app /app
+WORKDIR /app
+CMD ["hello.py", "/etc"]

examples/python3/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3-slim AS build-env
+ADD . /app
+WORKDIR /app
+
+FROM gcr.io/distroless/python3
+COPY --from=build-env /app /app
+WORKDIR /app
+CMD ["hello.py", "/etc"]