docker 1

DockerSwarm/Intro-Cloud.adoc

@@ -126,6 +126,168 @@ Origin:
 https://www.nirmata.com/2018/01/15/orchestration-platforms-in-the-ring-kubernetes-vs-docker-swarm
 
 
+
+== Docker
+
+
+=== Images
+
+In Docker, everything is based on Images. An image is a combination of a file system and parameters.
+
+==== Dockerfile
+
+A Dockerfile is a simple text file that contains a list of commands that the Docker client calls while creating an image. It's a simple way to automate the image creation process. The best part is that the commands you write in a Dockerfile are almost identical to their equivalent Linux commands. This means you don't really have to learn new syntax to create your own dockerfiles.
+
+.Dockerfile
+[source,sh]
+----
+FROM ubuntu:16.04
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update -y && \
+    apt-get -y install gcc && \
+    rm -rf /var/lib/apt/lists/*
+----
+
+==== docker build
+
+.docker build
+[source,sh]
+----
+docker build  -t ImageName:TagName dir
+
+Options
+
+    -t − is to mention a tag to the image
+
+    ImageName − This is the name you want to give to your image.
+
+    TagName − This is the tag you want to give to your image.
+
+    Dir − The directory where the Docker File is present.
+----
+
+.docker build example
+[source,sh]
+----
+docker build –t myimage:0.1 .
+----
+
+
+==== Displaying Docker Images
+
+To see the list of Docker images on the system, you can issue the following command.
+
+.docker images
+[source,sh]
+----
+docker images
+----
+
+This command is used to display all the images currently installed on the system.
+
+
+**Output:**
+
+-    TAG − This is used to logically tag images.
+-    Image ID − This is used to uniquely identify the image.
+-    Created − The number of days since the image was created.
+-    Virtual Size − The size of the image.
+
+
+=== Containers
+
+Containers are instances of Docker images that can be run using the Docker run command. The basic purpose of Docker is to run containers. 
+
+
+==== Running a Container
+
+Running of containers is managed with the Docker run command. To run a container in an interactive mode, first launch the Docker container.
+
+.run docker image
+[source,sh]
+----
+docker run –it myimage /bin/bash 
+----
+
+
+==== Listing of Containers
+
+One can list all of the containers on the machine via the docker ps command. This command is used to return the currently running containers.
+
+.run docker image
+[source,sh]
+----
+docker ps
+----
+
+==== Display the running processes of a container
+
+
+With this command, you can see the top processes within a container.
+Syntax
+
+.docker top
+[source,sh]
+----
+docker top ContainerID 
+
+Options
+
+    ContainerID − This is the Container ID for which you want to see the top processes.
+----
+
+==== Stop a running container
+
+This command is used to stop a running container.
+
+.docker stop
+[source,sh]
+----
+docker stop ContainerID 
+
+Options
+
+    ContainerID − This is the Container ID which needs to be stopped.
+----
+
+==== Attach a running container
+
+
+This command is used to attach to a running container.
+
+.docker 
+[source,sh]
+----
+docker attach ContainerID 
+
+Options
+
+    ContainerID − This is the Container ID to which you need to attach.
+----
+
+
+==== Delete container
+
+This command is used to delete a container.
+
+.docker rm
+[source,sh]
+----
+docker rm ContainerID 
+
+Options
+
+    ContainerID − This is the Container ID which needs to be removed.
+----
+
+
+
+
+
+
+
+
+
 :hardbreaks:
 
 {empty} +