Docker Commands

Docker Commands

In the previous post, we created a Dockerfile. Now, let’s build a Docker image and run a Docker container to explore various commands. Each command has different options, so it would be helpful to search or ask GPT when needed.

Command	Description	Example
docker version	Displays the installed Docker version	docker version
docker search	Search for Docker images in Docker Hub	docker search mysql
docker pull	Downloads an image from Docker Hub	docker pull mysql:latest
docker images	Lists locally available Docker images	docker images
docker rmi	Removes a Docker image	docker rmi mysql:latest
docker run	Creates and starts a new container	docker run -d --restart always --name mysqldb -p 3306:3306 -v /dbdata:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=1234 mysql:latest
docker ps	Lists running containers	docker ps
docker ps -a	Lists all containers, including stopped ones	docker ps -a
docker create	Creates a new container	docker create --restart always --name mysqldb -p 3306:3306 -v /dbdata:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=1234 mysql:latest
docker start	Starts a stopped container	docker start mysqldb
docker stop	Stops a running container	docker stop mysqldb
docker restart	Restarts a container	docker restart mysqldb
docker rm	Deletes a container	docker rm mysqldb
docker rm -f	Stops and Deletes a container	docker rm -f mysqldb
docker inspect	retrieves detailed information in JSON format.	docker inspect mysqldb
docker exec	Runs a command inside a running container	docker exec -it mysqldb /bin/bash
docker logs	Displays logs from a container	docker logs mysqldb
docker volume ls	Lists available Docker volumes	docker volume ls
docker volume create	Creates a new Docker volume	docker volume create my_volume
docker volume rm	Deletes a Docker volume	docker volume rm my_volume
docker build	Builds a Docker image from a Dockerfile	docker build -t dockertest .
docker tag	Adds a tag to an existing image	docker tag dockertest ds2man/dockertest:v1
docker push	Uploads an image to Docker Hub	docker push ds2man/dockertest:v1
docker stats	Check the runtime statistics of a running container	docker stats ds2man/dockertest:v1

Docker Commands Practice

• Here are some Docker commands I have executed.

(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker build -t ds2man/dockertest:v0.1 .
[+] Building 1.9s (13/13) FINISHED                                                                                                                                                                                                    docker:default
 => [internal] load build definition from dockerfile                                                                                                                                                                                            0.0s
 => => transferring dockerfile: 1.58kB                                                                                                                                                                                                          0.0s
 => [internal] load metadata for docker.io/library/python:3.11-slim                                                                                                                                                                             1.7s
 => [auth] library/python:pull token for registry-1.docker.io                                                                                                                                                                                   0.0s
 => [internal] load .dockerignore                                                                                                                                                                                                               0.0s
 => => transferring context: 178B                                                                                                                                                                                                               0.0s
 => [1/7] FROM docker.io/library/python:3.11-slim@sha256:42420f737ba91d509fc60d5ed65ed0492678a90c561e1fa08786ae8ba8b52eda                                                                                                                       0.0s
 => [internal] load build context                                                                                                                                                                                                               0.0s
 => => transferring context: 2.00kB                                                                                                                                                                                                             0.0s
 => CACHED [2/7] RUN apt-get update &&     apt-get install -y vim &&     rm -rf /var/lib/apt/lists/*                                                                                                                                            0.0s
 => CACHED [3/7] WORKDIR /app                                                                                                                                                                                                                   0.0s
 => CACHED [4/7] RUN mkdir -p common config                                                                                                                                                                                                     0.0s
 => CACHED [5/7] COPY requirements.txt .                                                                                                                                                                                                        0.0s
 => CACHED [6/7] RUN pip install --no-cache-dir -r requirements.txt                                                                                                                                                                             0.0s
 => [7/7] COPY . /app/                                                                                                                                                                                                                          0.0s
 => exporting to image                                                                                                                                                                                                                          0.0s
 => => exporting layers                                                                                                                                                                                                                         0.0s
 => => writing image sha256:502c0f89c34dbe127a4e4f8bbdec3d9efe2140b8eb702365bea753e323d79a16                                                                                                                                                    0.0s
 => => naming to docker.io/ds2man/dockertest:v0.1                                                                                                                                                                                               0.0s
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker run -d --env-file=.env --name mydocker ds2man/dockertest:v0.1
79685bc8687b1d017163221da1d47fd0df1f3c9ce40a1f016295644e1ab98330
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker ps
CONTAINER ID   IMAGE                    COMMAND                  CREATED          STATUS         PORTS     NAMES
79685bc8687b   ds2man/dockertest:v0.1   "python dockertest_m…"   26 minutes ago   Up 8 seconds             mydocker
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker stop mydocker
mydocker
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker start mydocker
mydocker
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker inspect mydocker
[
    {
        "Id": "79685bc8687b1d017163221da1d47fd0df1f3c9ce40a1f016295644e1ab98330",
        "Created": "2025-02-11T11:00:50.741714182Z",
        "Path": "python",
        "Args": [
            "dockertest_main.py"
        ],
        "State": {
            "Status": "running",
            "Running": true,
........
........
]
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker exec -it mydocker /bin/bash
root@79685bc8687b:/app# exit
(MyDev) jaoneol@DESKTOP-B7GM3C5:~/GP-MyReference/10.MyDockerTest$ docker logs mydocker
2025-02-11 11:30:31 | MyDockerTest | INFO | [MainThread] Test Start
2025-02-11 11:30:31 | MyDockerTest | INFO | [MainThread] UTC Time: 2025-02-11 11:30:31+00:00, KST Time: 2025-02-11 20:30:31+09:00
2025-02-11 11:30:31 | MyDockerTest | INFO | [MainThread] MySQLDB Connect Test
2025-02-11 11:30:31 | MyDockerTest | INFO | [MainThread] DockerTest End!!