Docker part3

Docker

Class 81st AWS Docker part 3 August 4th 

Docker Compose

Docker hub

Step1: Launched one Ec2 ubuntu server 

ubuntu@ip-10-0-2-61:~$ sudo -i

root@ip-10-0-2-61:~#

root@ip-10-0-2-61:~# apt install docker.io -y

Created symlink /etc/systemd/system/multi-user.target.wants/containerd.service → /usr/lib/systemd/system/containerd.service.

Setting up ubuntu-fan (0.12.16+24.04.1) ...

Created symlink /etc/systemd/system/multi-user.target.wants/ubuntu-fan.service → /usr/lib/systemd/system/ubuntu-fan.service.

Setting up docker.io (27.5.1-0ubuntu3~24.04.2) ...

info: Selecting GID from range 100 to 999 ...

info: Adding group `docker' (GID 113) ...

Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.

Created symlink /etc/systemd/system/sockets.target.wants/docker.socket → /usr/lib/systemd/system/docker.socket.

Processing triggers for dbus (1.14.10-4ubuntu4.1) ...

Processing triggers for man-db (2.12.0-4build2) ...

Scanning processes...

Scanning linux images...

Running kernel seems to be up-to-date.

No services need to be restarted.

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

--For our understand created on directory

root@ip-10-0-2-61:~# mkdir docker

--In ubuntu if you installed any package service will be automatically start, see below status of the Docker is active started, because at the time of installation time only it will create link

root@ip-10-0-2-61:~/docker# systemctl status docker.service

● docker.service - Docker Application Container Engine

     Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; preset: enabled)

     Active: active (running) since Tue 2025-08-05 15:06:02 UTC; 1min 52s ago

TriggeredBy: ● docker.socket

       Docs: https://docs.docker.com

   Main PID: 1910 (dockerd)

      Tasks: 8

     Memory: 27.1M (peak: 27.3M)

        CPU: 319ms

     CGroup: /system.slice/docker.service

             └─1910 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Aug 05 15:06:00 ip-10-0-2-61 systemd[1]: Starting docker.service - Docker Application Container Engine...

Aug 05 15:06:00 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:00.784849975Z" level=info msg="Starting up"

Aug 05 15:06:00 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:00.786203084Z" level=info msg="OTEL tracing is not configured, using no-op trace>

Aug 05 15:06:00 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:00.786521956Z" level=info msg="detected 127.0.0.53 nameserver, assuming systemd->

Aug 05 15:06:01 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:01.675399870Z" level=info msg="Loading containers: start."

Aug 05 15:06:02 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:02.274854781Z" level=info msg="Loading containers: done."

Aug 05 15:06:02 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:02.363019274Z" level=info msg="Docker daemon" commit="27.5.1-0ubuntu3~24.04.2" c>

Aug 05 15:06:02 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:02.363143457Z" level=info msg="Daemon has completed initialization"

Aug 05 15:06:02 ip-10-0-2-61 dockerd[1910]: time="2025-08-05T15:06:02.413772835Z" level=info msg="API listen on /run/docker.sock"

Aug 05 15:06:02 ip-10-0-2-61 systemd[1]: Started docker.service - Docker Application Container Engine

Step2:docker file need to create , need to deploy the file into frontend 

see below apt installation,cmd control the apache

root@ip-10-0-2-61:~/docker# vi Dockerfile

root@dockerhost:~/docker# cat Dockerfile

FROM ubuntu

RUN apt update -y

RUN apt install apache2 -y

COPY index.html /var/www/html

CMD ["/usr/sbin/apachectl", "-D", "FOREGROUND"]

Step3: Create index.html 

https://www.w3schools.com/howto/howto_css_login_form.asp

I have click the Form with icons,click Try your self register text change to Paytm movies

root@ip-10-0-2-61:~/docker# vi index.html 

copy the above save 

Image Build :

root@ip-10-0-2-61:~/docker# docker  build -t movies:v1 .

Successfully built 005ec395606c

Successfully tagged movies:v1

Creating Container 

Step4: d indict it will not go inside the container after creation, it will come out from  the container

root@dockerhost:~/docker# docker run -itd --name container1 -p 81:80 movies:v1

24c8d09e68c4055661823f3c6617e40e32d1707fcb403765ab96b2338307afa6

Step5: Paytm movie working like that why you can create ,multiple page 

1)Paytm Movies 

2)Train

3)Recharge 

1)Movies

2)Train Create 

root@dockerhost:~/docker# docker run -itd --name container1 -p 81:80 movies:v1

root@dockerhost:~/docker# docker run -itd --name container2 -p 82:80 train:v1

3)Recharge

Note: In the above process all the containers are managed and created one by one in real time we manage all the containers at same time so for that purpose we are going to use the concept called Docker compose.

DOCKER COMPOSE:

• It's a tool used to manage multiple containers in single host.
• we can create, start, stop, and delete all containers together.
• we write container information in a file called a compose file.
• compose file is in YAML format.
• inside the compose file we can give images, ports, and volumes info of containers.
• we need to download this tool and use it. (AMAZON LINUX)

Ubuntu not exist compose

root@dockerhost:~/docker# docker-compose

Command 'docker-compose' not found, but can be installed with:

snap install docker          # version 28.1.1+1, or

apt  install docker-compose  # version 1.29.2-6

See 'snap info docker' for additional versions.

Step1: installation

https://docs.docker.com/engine/install/ubuntu/

INSTALLATION:

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

docker-compose version

root@dockerhost:~/docker# docker-compose --version

docker-compose version 1.29.1, build c34c88b2

Step2:

CHANGING THE DEFULT FILE:

by default the docker-compose wil support the following names

docker-compose.yml, docker-compose.yaml, compose.yml, compose.yaml

mv docker-compose.yml raham.yml

docker-compose up -d : throws an error

docker-compose -f raham.yml up -d

docker-compose -f raham.yml ps

docker-compose -f raham.yml down

root@dockerhost:~/docker# vi compose.yaml

root@dockerhost:~/docker# cat compose.yaml

version: '3.8'

services:

  movies:

    image: movies:v1

    ports:

      - "81:80"

  train:

    image: train:v1

    ports:

      - "82:80"

  recharge:

    image: recharge:v1

    ports:

      - "83:80"

Step3: kill the container which is running existing port 

root@dockerhost:~/docker# docker kill $(docker ps -aq)

root@dockerhost:~/docker# docker ps -a

root@dockerhost:~/docker# docker rm $(docker ps -aq)

root@dockerhost:~/docker# docker ps -a

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

root@dockerhost:~/docker# docker images

REPOSITORY   TAG       IMAGE ID       CREATED          SIZE

recharge     v1        b2a586051a66   26 minutes ago   245MB

train        v1        a26258ccbab4   30 minutes ago   245MB

movies       v1        1b7a6480b8ac   35 minutes ago   245MB

Step4: Automatically 3 container created automatically 

root@dockerhost:~/docker# docker-compose up -d

Creating network "docker_default" with the default driver

Creating docker_movies_1   ... done

Creating docker_train_1    ... done

Creating docker_recharge_1 ... done

Step5: list of docker-compose ps 

root@dockerhost:~/docker# docker-compose ps -a

      Name                     Command               State                Ports

---------------------------------------------------------------------------------------------

docker_movies_1     /usr/sbin/apachectl -D FOR ...   Up      0.0.0.0:81->80/tcp,:::81->80/tcp

docker_recharge_1   /usr/sbin/apachectl -D FOR ...   Up      0.0.0.0:83->80/tcp,:::83->80/tcp

docker_train_1      /usr/sbin/apachectl -D FOR ...   Up      0.0.0.0:82->80/tcp,:::82->80/tcp

root@dockerhost:~/docker# docker-compose images

    Container       Repository   Tag     Image Id       Size

--------------------------------------------------------------

docker_movies_1     movies       v1    1b7a6480b8ac   244.6 MB

docker_recharge_1   recharge     v1    b2a586051a66   244.6 MB

docker_train_1      train        v1    a26258ccbab4   244.6 MB

Step6:  Stop 

root@dockerhost:~/docker# docker-compose stop

Stopping docker_recharge_1 ... done

Stopping docker_train_1    ... done

Stopping docker_movies_1   ... done

Step7: start

root@dockerhost:~/docker# docker-compose start

Starting movies   ... done

Starting train    ... done

Starting recharge ... done

it will manage all container using docker-compose 

Step7:Logs

root@dockerhost:~/docker# docker-compose logs

Step8: All pages open, but we have maintained all container in one compose fie

Remove 

root@dockerhost:~/docker# docker-compose stop

Stopping docker_recharge_1 ... done

Stopping docker_train_1    ... done

Stopping docker_movies_1   ... done

root@dockerhost:~/docker# docker-compose rm

Going to remove docker_recharge_1, docker_train_1, docker_movies_1

Are you sure? [yN] y

Removing docker_recharge_1 ... done

Removing docker_train_1    ... done

Removing docker_movies_1   ... done

Step9: docker-compose down stop and remove

root@dockerhost:~/docker# docker-compose down

Stopping docker_movies_1   ... done

Stopping docker_recharge_1 ... done

Stopping docker_train_1    ... done

Removing docker_movies_1   ... done

Removing docker_recharge_1 ... done

Removing docker_train_1    ... done

Removing network docker_default

                                            Docker Hub

Docker image we make public use ,put the images in docker hub 

Step1:

https://app.docker.com/accounts/vsmoracle

Step2: docker tag the server using below command 

root@dockerhost:~/docker# docker login

USING WEB-BASED LOGIN

To sign in with credentials on the command line, use 'docker login -u <username>'

Your one-time device confirmation code is: MHHN-FRJM

Press ENTER to open your browser or submit your device code here: https://login.docker.com/activate

Waiting for authentication in the browser…

 

Login url and give active code MHHN-FRJM click confirm 

root@dockerhost:~/docker# docker login

Authenticating with existing credentials...

WARNING! Your password will be stored unencrypted in /root/.docker/config.json.

Configure a credential helper to remove this warning. See

https://docs.docker.com/engine/reference/commandline/login/#credential-stores

Login Succeeded

root@dockerhost:~/docker# docker push vakatisubbu/movies

Step3: create one more repository in docker hub 

vakatisubbu/train

root@dockerhost:~/docker# docker tag train:v1 vakatisubbu/train

root@dockerhost:~/docker# docker push vakatisubbu/train

Using default tag: latest

The push refers to repository [docker.io/vakatisubbu/train]

6d62776b1864: Mounted from vakatisubbu/train

54408b735120: Mounted from vakatisubbu/train

70ade84ed73d: Mounted from vakatisubbu/train

107cbdaeec04: Mounted from vakatisubbu/train

latest: digest: sha256:123f7b15cb5977b0909453335b6ce64ede13f709960938021d1edc6d25b5db6d size: 1161

uploaded images successfully in docker hub 

Step4:

root@dockerhost:~/docker# docker tag recharge:v1 vakatisubbu/recharge

root@dockerhost:~/docker# docker push vakatisubbu/recharge

uploaded images successfully in docker hub 

Step5:

root@dockerhost:~/docker# docker rmi -f $(docker images -q)

deleted  all docker imags

Step7: now not images in server, we have docker hub all images 

root@dockerhost:~/docker# docker images

REPOSITORY   TAG       IMAGE ID   CREATED   SIZE

Step8: docker pull

root@dockerhost:~/docker# docker pull vakatisubbu/movies:latest

latest: Pulling from vakatisubbu/movies

e87500e69896: Downloading [>                                                  ]  306.6kB/30.59MB

e87500e69896: Pull complete

b085d7aa1527: Pull complete

781519f627b4: Pull complete

418464f70534: Pull complete

Digest: sha256:123f7b15cb5977b0909453335b6ce64ede13f709960938021d1edc6d25b5db6d

Status: Downloaded newer image for vakatisubbu/movies:latest

docker.io/vakatisubbu/movies:latest

root@dockerhost:~/docker#

root@dockerhost:~/docker# docker images

REPOSITORY           TAG       IMAGE ID       CREATED       SIZE

vakatisubbu/movies   latest    1b7a6480b8ac   2 hours ago   245MB

root@dockerhost:~/docker# docker pull vakatisubbu/train:latest

latest: Pulling from vakatisubbu/train

e87500e69896: Already exists

b085d7aa1527: Already exists

781519f627b4: Already exists

291db30c8aef: Pull complete

Digest: sha256:b057183d4648d21cd55602d4cc697f1454fcda1713ae2e6ae7e0b279e2771365

Status: Downloaded newer image for vakatisubbu/train:latest

docker.io/vakatisubbu/train:latest

root@dockerhost:~/docker# docker images

REPOSITORY           TAG       IMAGE ID       CREATED       SIZE

vakatisubbu/train    latest    a26258ccbab4   2 hours ago   245MB

vakatisubbu/movies   latest    1b7a6480b8ac   2 hours ago   245MB

root@dockerhost:~/docker# docker pull vakatisubbu/recharge:latest

latest: Pulling from vakatisubbu/recharge

e87500e69896: Already exists

b085d7aa1527: Already exists

781519f627b4: Already exists

f4834f3a85b1: Pull complete

Digest: sha256:0eaad3052ebd2cb36dcfab43349b67fbca558e795673d3c5d463e09f37b218d6

Status: Downloaded newer image for vakatisubbu/recharge:latest

docker.io/vakatisubbu/recharge:latest

root@dockerhost:~/docker# docker images

REPOSITORY             TAG       IMAGE ID       CREATED       SIZE

vakatisubbu/recharge   latest    b2a586051a66   2 hours ago   245MB

vakatisubbu/train      latest    a26258ccbab4   2 hours ago   245MB

vakatisubbu/movies     latest    1b7a6480b8ac   2 hours ago   245MB

--Thanks