Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications.

2. Remove any Docker files that are running in the system, using the following command:

$ sudo apt-get remove docker docker-engine docker.io

1. After entering the above command, you will need to enter the password of the root and press enter.

2. Check if the system is up-to-date using the following command:

1. Install Docker using the following command:

2. You’ll then get a prompt asking you to choose between y/n - choose y.

1. Install all the dependency packages using the following command:

1. Before testing Docker, check the version installed using the following command:

1. Pull an image from the Docker hub using the following command:

2. Here, hello-world is the docker image present on the Docker hub.

1. Check if the docker image has been pulled and is present in your system using the following command:

2. To display all the containers pulled, use the following command:

1. To check for containers in a running state, use the following command:

Now you’ve just successfully installed Docker on your Ubuntu system!

In this blog, I will explain how to install Docker on the Ubuntu operating system by using the ubuntu terminal & we also know what is Docker in brief.

How to install Docker on Ubuntu: A complete Docker installation guideline in 2023

You need to follow the steps to deploy a Spring Boot application in Docker:

1. Create a Dockerfile: A Dockerfile is a text file that contains instructions on how to build a Docker image. Create a Dockerfile in the root directory of your Spring Boot application.

2. Build a Docker image: Use the docker build command to build a Docker image from the Dockerfile.

3. Run the Docker container: Use the docker run command to run the Docker container from the image you just built.

This command maps the container's port 8080 to the host's port 8080, so you can access the Spring Boot application from your local machine using http://localhost:8080.

That's it! Your Spring Boot application is now deployed in a Docker container.

Note: You will need to have Docker installed on your machine to perform these steps.

4. Mount application configuration: If your Spring Boot application requires some external configuration, you can mount a configuration file or directory as a volume in the Docker container. For example, if your application uses a application.yml configuration file located at /path/to/config, you can use the -v option to mount the directory as a volume inside the container.

docker run -p 8080:8080 -v /path/to/config:/config <image-name>

5. Use Docker Compose: If you have multiple containers to run or need to run the container with specific settings, you can use Docker Compose. Create a docker-compose.yml file in the root directory of your Spring Boot application with the following content:

Then, use the docker-compose up command to start the container:

These are the basic steps to deploy a Spring Boot application in Docker. Remember to update the Dockerfile, build a new image, and re-run the container every time you make changes to your application.

In this article, I will explain how to deploy a Spring Boot application in Docker.

Deploy Spring Boot Application In Docker

docker push is a command used in the Docker containerization platform to push a Docker image to a registry. A Docker registry is a storage and distribution system for Docker images. It can be a public registry like Docker Hub or a private registry set up by an organization.

When you use the docker push command, you are pushing a Docker image from your local machine to a registry, making it available for others to use. This is a critical step in the containerization process, as it allows you to share and distribute your application with others.

Here is the basic syntax for using the docker push command:

docker push <registry>/<image-name>:<tag>

1. <registry> is the URL of the Docker registry you want to push the image to.

2. <image-name> is the name of the Docker image you want to push.

3. <tag> is an optional tag you can use to identify a specific version of the image.

For example, if you want to push a Docker image named myapp with tag v1.0 to Docker Hub, you would use the following command:

docker push docker.io/<your-username>/myapp:v1.0

This would push the myapp:v1.0 image to your Docker Hub account, making it available for others to use.

The docker push command uploads the image layers that make up the Docker image to the registry, as well as any metadata that is associated with the image. Once the push is complete, the image can be pulled from the registry by other users or machines.

It's important to note that you need to have appropriate permissions to push an image to a registry. For example, if you are using a private registry, you may need to authenticate with the registry before you can push an image.

Also, it's a good practice to tag your images with a version number before pushing them to a registry. This makes it easier to manage and identify different versions of your application.

Overall, the docker push command is a critical tool in the containerization workflow, as it allows you to share your Docker images with others and make them available for deployment.

In this article, I will discuss what is Docker push and what are their works.

What is Docker Push?

Use Docker containers as build requirements in Conan:

Conan allows specifying build requirements as packages or as build_requires, which are packages used only during the build process. Build requires are specified in the conanfile.py file and are used to provide additional dependencies that are required only during the build process.

To use Docker containers as build requirements in Conan, you can define a build_requires() method in your conanfile.py file and use the ConanFile.run() method to execute a shell command that runs a Docker container. Here's an example:

        self.build_requires("docker/1.0.0")

        self.run("docker run --rm -v $PWD:/workdir my_docker_image /bin/bash -c 'cd /workdir && ./configure && make'")

In this example, the build_requirements() method specifies that the docker package is required as a build requirement. The build() method then uses the ConanFile.run() method to execute a shell command that runs a Docker container, passing the current working directory ($PWD) as a volume mount and running the configure and make commands inside the container.

Additionally, you can also define a custom Docker image that includes all the necessary build dependencies and tools required by your package's build process. To use this custom Docker image as a build requirement, you can create a Dockerfile that installs the required build dependencies and tools and builds a Docker image.

    apt-get install -y build-essential cmake git

This Dockerfile installs the build-essential, cmake, and git packages, which are commonly used build dependencies, and sets the working directory to /app.

To use this Docker image as a build requirement in Conan, you can modify the build() method in the conanfile.py file to run a container based on the custom Docker image:

        docker_image = "my_custom_docker_image:latest"

        self.run(f"docker run --rm -v $PWD:/workdir {docker_image} /bin/bash -c 'cd /workdir && ./configure && make'")

In this example, the build() method uses the docker_image variable to specify the name and tag of the custom Docker image. The ConanFile.run() method is used to execute a shell command that runs a Docker container based on the custom Docker image and performs the build process inside the container.

Using Docker containers as build requirements in Conan can help simplify the build process by providing a consistent build environment and isolating build dependencies from the host system. It can also help ensure reproducibility of builds across different systems and platforms.

Conan is a package manager that lets developers capture artifacts created during builds of applications and libraries, so let's see how to use docker containers as build-requires in Conan.

Using docker-containers as build-requires in conan

Please suggest what is the best way to use?

AWS Elastic Beanstalk or the Amazon ECS (Fargate) to scale Docker containers?

So I have a Nginx running inside a docker container, I have a mysql running on localhost, I want to connect to the MySql from within my Nginx. The MySql is running on localhost and not exposing a port to the outside world, so its bound on localhost, not bound on the ip address of the machine.

Is there any way to connect to this MySql or any other program on localhost from within this docker container?

From inside of a Docker container, how do I connect to the localhost of the machine?

I am in charge of setting up Kubernetes for my IT Department. I am getting close to being done and I presented it yesterday.

I got a question asking if Kubernetes could be leveraged with Salesforce. I don't know much about Salesforce, so I am unsure. I thought Salesforce was a hosted product. Meaning it was something you can't use outside of Salesforce's platform. But I don't really know and as such I don't want to say "yes" or "no" yet.

Can a Salesforce website run in a Docker Container? Can it run in an on-premises Kubernetes Cluster? (Maybe there is a way to connect the cluster with the Salesforce platform?)

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Trending Blogposts on docker-container

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