From c55d2063e1c2c434f540b2b342e214d54132725f Mon Sep 17 00:00:00 2001
From: "Gerasimos (Makis) Maropoulos" <kataras2006@hotmail.com>
Date: Thu, 6 Feb 2020 18:43:03 +0200
Subject: [PATCH] add a simple docker example

Former-commit-id: cacfa3ad903ce542ce455cb2298c40639c645d3c
---
 _examples/README.md                 |  1 +
 _examples/docker/.dokerignore       |  3 +++
 _examples/docker/Dockerfile         | 15 +++++++++++++++
 _examples/docker/README.md          | 27 +++++++++++++++++++++++++++
 _examples/docker/docker-compose.yml |  8 ++++++++
 _examples/docker/go.mod             |  7 +++++++
 _examples/docker/main.go            | 26 ++++++++++++++++++++++++++
 7 files changed, 87 insertions(+)
 create mode 100644 _examples/docker/.dokerignore
 create mode 100644 _examples/docker/Dockerfile
 create mode 100644 _examples/docker/README.md
 create mode 100644 _examples/docker/docker-compose.yml
 create mode 100644 _examples/docker/go.mod
 create mode 100644 _examples/docker/main.go

diff --git a/_examples/README.md b/_examples/README.md
index d993ff0e..d2333e4e 100644
--- a/_examples/README.md
+++ b/_examples/README.md
@@ -33,6 +33,7 @@ $ go run main.go
 ### Overview
 
 - [Hello world!](hello-world/main.go)
+- [Docker](docker/README.md)
 - [Hello WebAssembly!](webassembly/basic/main.go)
 - [Glimpse](overview/main.go)
 - [Tutorial: Online Visitors](tutorial/online-visitors/main.go)
diff --git a/_examples/docker/.dokerignore b/_examples/docker/.dokerignore
new file mode 100644
index 00000000..ffdca42e
--- /dev/null
+++ b/_examples/docker/.dokerignore
@@ -0,0 +1,3 @@
+.git
+node_modules
+bin
\ No newline at end of file
diff --git a/_examples/docker/Dockerfile b/_examples/docker/Dockerfile
new file mode 100644
index 00000000..0d1e0227
--- /dev/null
+++ b/_examples/docker/Dockerfile
@@ -0,0 +1,15 @@
+# docker build -t myapp . 
+# docker run --rm -it -p 8080:8080 myapp:latest
+FROM golang:latest AS builder
+RUN apt-get update
+ENV GO111MODULE=on \
+    CGO_ENABLED=0 \
+    GOOS=linux \
+    GOARCH=amd64
+WORKDIR /go/src/app
+COPY . /go/src/app
+RUN go install
+
+FROM scratch
+COPY --from=builder /go/bin/app .
+ENTRYPOINT ["./app"]
\ No newline at end of file
diff --git a/_examples/docker/README.md b/_examples/docker/README.md
new file mode 100644
index 00000000..cdb267f8
--- /dev/null
+++ b/_examples/docker/README.md
@@ -0,0 +1,27 @@
+# Docker Example
+
+The only requirement for this example is [Docker](https://docs.docker.com/install/).
+
+## Docker Compose
+
+The Docker Compose is pre-installed with Docker for Windows. For linux please follow the steps described at: https://docs.docker.com/compose/install/.
+
+Build and run the application for linux arch and expose it on http://localhost:8080.
+
+```sh
+$ docker-compose up
+```
+
+See [docker-compose file](docker-compose.yml).
+
+## Without Docker Compose
+
+1. Build the image as "myapp" (docker build)
+2. Run the image and map exposed ports (-p 8080:8080)
+3. Attach the interactive mode so CTRL/CMD+C signals are respected to shutdown the Iris Server (-it)
+4. Cleanup the image on finish (--rm)
+
+```sh
+$ docker build -t myapp . 
+$ docker run --rm -it -p 8080:8080 myapp:latest
+```
diff --git a/_examples/docker/docker-compose.yml b/_examples/docker/docker-compose.yml
new file mode 100644
index 00000000..54c86b33
--- /dev/null
+++ b/_examples/docker/docker-compose.yml
@@ -0,0 +1,8 @@
+# docker-compose up [--build]
+version: '3'
+
+services:
+  app:
+    build: .
+    ports:
+      - 8080:8080
\ No newline at end of file
diff --git a/_examples/docker/go.mod b/_examples/docker/go.mod
new file mode 100644
index 00000000..0e122131
--- /dev/null
+++ b/_examples/docker/go.mod
@@ -0,0 +1,7 @@
+module app
+
+go 1.13
+
+require (
+	github.com/kataras/iris/v12 v12.1.6
+)
diff --git a/_examples/docker/main.go b/_examples/docker/main.go
new file mode 100644
index 00000000..521f1126
--- /dev/null
+++ b/_examples/docker/main.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+	"flag"
+
+	"github.com/kataras/iris/v12"
+)
+
+var addr = flag.String("addr", ":8080", "host:port to listen on")
+
+// $ docker-compose up
+func main() {
+	flag.Parse()
+
+	app := iris.New()
+
+	app.Get("/", func(ctx iris.Context) {
+		ctx.HTML("<strong>Hello World!</strong>")
+	})
+
+	app.Get("/api/values/{id:uint}", func(ctx iris.Context) {
+		ctx.Writef("id: %d", ctx.Params().GetUintDefault("id", 0))
+	})
+
+	app.Run(iris.Addr(*addr))
+}