Recently I was playing with docker API on OSX to use with Jenkins and the setup was little complicated so I thought to put all steps together in one place. Just to summarise the default tcp port for docker is 2375 (unencrypted) and 2376(encrypted) communication over tcp(although we can choose any other port).
Continue reading Enabling docker remote API on OSX10 Docker image security best practices
Original files from: snyk
Local Smtp server on Docker
Quick and easy way to setup an SMTP mail server using docker
docker run --restart unless-stopped --name mailhog -p 1025:1025 -p 8025:8025 -d mailhog/mailhog
Jenkins in Docker
We love Jenkins and we love Docker, so let’s get them working together.
We are assuming you already have Docker installed on your environment.
Here is the terminal command to use:
Low-Bandwidth website
Many of today’s website is designed around giving a good user experience. This comes at a cost of high-bandwidth. Not everyone in the world will have a good internet connection, how about when you are at sea on a ship or in a developing country such as India or Pakistan.
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Sample .NET Core Docker file
Here is a working example of a simple Docker file for a .NET Core 3.1 project
FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build-env
WORKDIR /app
COPY project.csproj ./
RUN dotnet restore
COPY . ./
RUN dotnet publish -c Release -o out
FROM mcr.microsoft.com/dotnet/core/runtime:3.1
WORKDIR /app
COPY --from=build-env /app/out .
ENTRYPOINT ["dotnet", "project.dll"]
Docker cribsheet
Build
Build an image from the Dockerfile in the current directory and tag the image
docker build -t myimage -f Dockerfile .List all images that are locally stored with the Docker Engine
docker ps -aDelete an image from the local image store
docker image rm CONTAINER_NAMEYou may want to remove all orphaned images, you can do this with dandling field
docker rmi $(docker images -f dangling=true -q)
Benefits of Containers
What Are Containers?
Containers are a form of operating system virtualization. A single container might be used to run anything from a small microservice or software process to a larger application. Inside a container are all the necessary executables, binary code, libraries, and configuration files. Compared to server or machine virtualization approaches, however, containers do not contain operating system images. This makes them more lightweight and portable, with significantly less overhead. In larger application deployments, multiple containers may be deployed as one or more container clusters. Such clusters might be managed by a container orchestrator such as Kubernetes.
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API Gateway in ASP.NET Core
Working with a good technical architecture you’ll soon need to work with an API Gateway. There are many industrial solutions for large scale system giving full control and logging, such as Apigee or Software AG, but these, of course, cost a business
In this article, I’ll look at possible homegrown API’s within ASP.NET Core, which give you a lot of features without the need to pay third parties.
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Event Bus Working Sample
This article will show how to use an Event Bus using RabbitMQ using Work Queues that will be used to distribute time-consuming tasks among multiple workers.
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