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Move all samples to the root dir

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Signed-off-by: Anca Iordache <anca.iordache@docker.com>
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Anca Iordache 2020-03-16 17:23:59 +01:00
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samples/nginx-golang-mysql/README.md
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## Compose sample application
### Go server with an Nginx proxy and a MySQL database
Project structure:
```
.
├── backend
│   ├── Dockerfile
│   ├── go.mod
│   └── main.go
├── db
│   └── password.txt
├── docker-compose.yaml
├── proxy
│   ├── conf
│   └── Dockerfile
└── README.md
```
[_docker-compose.yaml_](docker-compose.yaml)
```
services:
backend:
build: backend
...
db:
image: mysql:5.7
...
proxy:
build: proxy
ports:
- 80:80
...
```
The compose file defines an application with three services `proxy`, `backend` and `db`.
When deploying the application, docker-compose maps port 80 of the proxy service container to port 80 of the host as specified in the file.
Make sure port 80 on the host is not already being in use.
## Deploy with docker-compose
```
$ docker-compose up -d
Creating network "nginx-golang-mysql_default" with the default driver
Building backend
Step 1/8 : FROM golang:1.13-alpine AS build
1.13-alpine: Pulling from library/golang
...
Successfully built 5f7c899f9b49
Successfully tagged nginx-golang-mysql_proxy:latest
WARNING: Image for service proxy was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
Creating nginx-golang-mysql_db_1 ... done
Creating nginx-golang-mysql_backend_1 ... done
Creating nginx-golang-mysql_proxy_1 ... done
```
## Expected result
Listing containers must show two containers running and the port mapping as below:
```
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8906b14c5ad1 nginx-golang-mysql_proxy "nginx -g 'daemon of…" 2 minutes ago Up 2 minutes 0.0.0.0:80->80/tcp nginx-golang-mysq
l_proxy_1
13e0e0a7715a nginx-golang-mysql_backend "/server" 2 minutes ago Up 2 minutes 8000/tcp nginx-golang-mysq
l_backend_1
ca8c5975d205 mysql:5.7 "docker-entrypoint.s…" 2 minutes ago Up 2 minutes 3306/tcp, 33060/tcp nginx-golang-mysq
l_db_1
```
After the application starts, navigate to `http://localhost:80` in your web browser or run:
```
$ curl localhost:80
["Blog post #0","Blog post #1","Blog post #2","Blog post #3","Blog post #4"]
```
Stop and remove the containers
```
$ docker-compose down
```