Kyle Morton kyle-morton

Key Docker Commands

IMAGES

docker pull [image-name]

pull image onto machine

docker images

list images on your machine

Dockerfile

Dockerfiles represent a way to create an image w/ a layered file system using 1 or more existing images along w/ steps to build/copy files and dependencies.

Creating a customer ASP.NET Core Dockerfile

Easy way to autogenerate a production ready .dockerfile in VS Code -

open project folder in vscode
install both the docker & C# (omnisharp) extensions

Container Linking

this is very useful if you have an app image that needs to communicate w/ 1 or more other containers (things like a web server, database(s), other app servers, etc)

Linking containers by name (legacy linking)

Steps

Run container w/ a name using cmd line switch

Docker Compose

Features

manages the whole app lifecycle -- start, stop, and rebuilding services -- view status of running services -- stream the log output of running services -- run a one-off command on a service

	import UIKit

	var str = "Hello, playground"

	func sayTitle(title: String) {
	print("Title: \(title)")
	}

	class Movie {
	var title: String?

	FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-nanoserver-1909 AS base
	WORKDIR /app
	EXPOSE 5000

	FROM mcr.microsoft.com/dotnet/core/sdk:3.1-nanoserver-1909 AS build
	WORKDIR /src
	COPY ["docker-mvc.csproj", "./"]
	RUN dotnet restore "./docker-mvc.csproj"
	COPY . .
	WORKDIR "/src/."

	FROM mcr.microsoft.com/dotnet/core/sdk

	LABEL key="Kyle Morton"

	ENV ASPNETCORE_URLS=http://*:5000
	ENV DOTNET_USE_POLLING_FILE_WATCHER=1
	ENV ASPNETCORE_ENVIRONMENT=development

	WORKDIR /app

	import UIKit

	struct Student {
	var name: String
	var testScore: Int
	}

	let students = [
	Student(name: "Ted", testScore: 84),
	Student(name: "Todd", testScore: 79),

	var strCmdText = "/C youtube-dl -i --extract-audio --audio-format mp3 --audio-quality 0 {YOUTUBE_URL};
	System.Diagnostics.Process.Start("CMD.exe", strCmdText);