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https://github.com/danydodson/docker-todo

🎅 Docker tutorial todos app
https://github.com/danydodson/docker-todo

Last synced: 12 days ago
JSON representation

🎅 Docker tutorial todos app

Host: GitHub
URL: https://github.com/danydodson/docker-todo
Owner: danydodson
Created: 2020-04-29T08:42:55.000Z (over 4 years ago)
Default Branch: master
Last Pushed: 2020-08-24T17:25:25.000Z (over 4 years ago)
Last Synced: 2024-11-07T13:27:27.773Z (2 months ago)
Language: JavaScript
Size: 2.45 MB
Stars: 1
Watchers: 2
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: readme.md

Awesome Lists containing this project

README

# Getting Started Tutorial ToDo App

#### Build image in Dockerfile
```bash
docker build -t docker-todo .
```
#### Start container
```bash
docker run -dp 3000:3000 --name docker-todo docker-todo
```

## Sharing image and container

#### Tag image
```bash
docker tag docker-todo danydodson/docker-todo
```
#### Push image to docker registry
```bash
docker push danydodson/docker-todo
```

## Persist data for todo app

#### Create a named volume
docker volume create docker-todo-db
```
#### Run todo app container with -v to attach named docker-todo-db volume
```bash
docker run -dp 3000:3000 -v docker-todo-db:/etc/todos --name docker-todo docker-todo
```
#### Inspect the named volume
```bash
docker volume inspect docker-todo-db
```
#### Run todo app container with -w (working dir) -v to bind mount (local:container)
```bash
docker run -dp 3000:3000 \
--name docker-todo \
-w /app \
-v ${PWD}:/app \
-v docker-todo-db:/etc/todos \
node:12-alpine \
sh -c "yarn install && yarn run dev"
```
#### Watch container logs
```bash
docker logs -f
```

## Multi-Container apps

#### Create the network for containers to use
```bash
docker network create docker-todo-network
```
#### Start a mysql container and attach network
```bash
docker run -d \
--name docker-todo-mysql \
--network docker-todo-network --network-alias mysql \
-v todo-mysql-data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=secret \
-e MYSQL_DATABASE=todos \
mysql:5.7
```
#### Start mysql container and login to mysql using env `secret`
```bash
docker exec -it mysql -p
```
#### Show dbs
```sql
mysql> SHOW DATABASES;
```

## Connecting to MySQL

#### Use (nicolaka/netshoot) tools for troubleshooting or debugging networking issues
```bash
docker run -it --network todo-network --name nicolaka-netshoot nicolaka/netshoot
```
#### Command dig mysql run a DNS tool
```bash
dig mysql
```
## Run our app with MySQL
```bash
docker run -dp 3000:3000 \
--name todo-app-with-mysql \
-w /app -v ${PWD}:/app \
--network todo-network \
-e MYSQL_HOST=mysql \
-e MYSQL_USER=root \
-e MYSQL_PASSWORD=secret \
-e MYSQL_DB=todos \
node:12-alpine \
sh -c "yarn install && yarn run dev"
```
#### Connect to mysql db container and start cli
```bash
docker exec -ti mysql -p todos
```
#### Command to display todos
```sql
select * from todo_items;
```

## Run using docker compose

#### Convert the command used to define app to docker-compose.yml
- app service definition command
```bash
docker run -dp 3000:3000 \
-w /app -v ${PWD}:/app \
--network todo-app \
--name todo-app \
-e MYSQL_HOST=mysql \
-e MYSQL_USER=root \
-e MYSQL_PASSWORD=secret \
-e MYSQL_DB=todos \
node:12-alpine \
sh -c "yarn install && yarn run dev"
```
- app service definition in docker-compose
```yml
version: "3.7"

services:
app:
image: node:12-alpine
command: sh -c "yarn install && yarn run dev"
ports:
- 3000:3000
working_dir: /app
volumes:
- ./:/app
environment:
MYSQL_HOST: mysql
MYSQL_USER: root
MYSQL_PASSWORD: secret
MYSQL_DB: todos

```
- mysql service definition command
```bash
docker run -d \
--network todo-network --network-alias mysql \
--name todo-mysql \
-v todo-mysql-data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=secret \
-e MYSQL_DATABASE=todos \
mysql:5.7
```
- mysql service definition in docker-compose
```yml
version: "3.7"

services:
mysql:
image: mysql:5.7
volumes:
- todo-data:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: secret
MYSQL_DATABASE: todos

volumes:
todo-mysql-data:

```
#### complete docker-compose.yml
```yml
version: "3.7"

services:
todo-app:
image: node:12-alpine
container_name: todo-app
command: sh -c "yarn install && yarn run dev"
ports:
- 3000:3000
working_dir: /app
volumes:
- ./:/app
environment:
MYSQL_HOST: todo-mysql
MYSQL_USER: root
MYSQL_PASSWORD: secret
MYSQL_DB: todos

todo-mysql:
image: mysql:5.7
container_name: todo-mysql
volumes:
- todo-db-vol:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: secret
MYSQL_DATABASE: todos

volumes:
todo-db-vol:
```