How it works

Ex : write a docker compose file Write a docker compose file that will setup two nodejs micro services (server + worker) with their latest image version, allow them to connect, and share with them env var containing a DB connection string. The worker app should be scaled up to 4 services

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Container / image An image is like a class, a container is like an instance or object of this class.
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Docker Client : can manipulate containers Docker Engine : is installed on a vhost or host to handle containers, it is manipulated by a local or remote Docker Client
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Base commands : - docker run xxx (launch image xxx into a new container - dl it from docker hub if not found locally) - docker image ls (list available images on current host) - docker container ls -a (list all containers even not active ones)
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Docker Machine ? Deploys and manages vhost/VM on different platforms via its "drivers" : your Mac, Digital Ocean, AWS, a physical server VM are created and deployed with Docker Engine installed, thus you can connect to it with your Docker Client.
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Run a container in background docker run -d Port forwarding with a docker container docker run -p 4000:80 (will map port 4000 of current host to port 80 of docker container)
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Docker Registry : a registry contains multiple repository which contains multiple docker images. You can setup a private registry or use public ones
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Service - part of a distributed application like application server or DB server. A service deploys multiple containers in a load balanced subnet
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In production you deploy a service with docker swarm and docker stack deploy Make use of a docker-compose.yml file to specify image used and scalability parameters
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Stack - other name for a distributed application A stack is managed with docker stack commands
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Swarm A docker swarm is a group of machine/host/vhost linked into a cluste Each host into a cluster is called a node
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Insurance companies don't make anything.
James Dyson
What I discovered in Auschwitz is the human condition, the end point of a great adventure, where the European traveler arrived after his two-thousand-year-old moral and cultural history.
Imre Kertesz
Sometimes people think they know you and they go, 'Hey!' and then they realize that they've just seen you on the television. That's kind of funny sometimes.
Maisie Williams
Tiny tweaks can lead to big changes.
Amy Cuddy
I got a rent-stabilized apartment in 1977, and that has made my life as an actor possible.
Marylouise Burke
A small town is a place where there's no place to go where you shouldn't.
Burt Bacharach
Around '75 when the recession hit, club owners started going to disco because it was cheaper for them to just buy a sound system than it was to hire a band.
Tommy Shaw
The pedicure is beside the point - the rub is all I care about. And not just my feet, my calves and thighs. There is nothing better, except maybe a scalp massage.
Amy Landecker
Life is change. Growth is optional. Choose wisely.
Albert Einstein
There's so many things I want to do. I want to work with great filmmakers, great actors, great scripts. And there's no reason for me to do anything short of that, because I'm 24, I don't have a family, I don't need to make tons of money, and I'm not dying to get famous.
Tobey Maguire
My parents were pretty liberal, but they were still parents. I definitely had my teenage rebellion.
Lauren Oliver
Get all the fools on your side and you can be elected to anything.
Frank Dane
Let go of the past.
Robert Greene
There is nothing either good or bad, but thinking makes it so.
Shakespeare
I have things I say over and over again, for sure, but I've never wanted to make an album or really go on the road. I don't want any traction. I just want to be able to express myself and to feel love.
Jenny Slate
Well, some mathematics problems look simple, and you try them for a year or so, and then you try them for a hundred years, and it turns out that they're extremely hard to solve.
Andrew Wiles
Our obligation is to refuse to let bad win, to refuse to let evil hold the field.
James Comey
There are things one must do for oneself.
Robert Mugabe
It has been wisely said that we cannot really love anybody at whom we never laugh.
Agnes Repplier
I would never be in a film just for the sake of being in a film, so I am waiting for the right role to come along.
Condola Rashad
On 'Black-ish,' I like my makeup to be really natural - so much that I can do it myself. My character is a mother of four and a doctor and a wife, who would not have time to be putting on eyeshadow or curling her lashes.
Tracee Ellis Ross
The number of e-mails and letters that I get from choreographers, from sculptors, from composers who are being inspired by science is huge.
Brian Greene
The only person who really impressed me with making new music is Cudi. Everyone else seems to be jumping on the same music, the producer-made stuff, but the one person that's made new music to me is Cudi.
Lupe Fiasco
Among the southern tribes, on the contrary, hats were sometimes worn in the dance, although this was not considered in strict accordance with the doctrine.
James Mooney