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)I came across this guide as it is an introduction to developing microservices-based applications and managing them using containers. It discusses architectural design and implementation approaches using .NET Core and Docker containers. To make it easier to get started with containers and microservices, the guide focuses on a reference containerized and microservice-based application that you can explore. The sample application is available at the eShopOnContainers GitHub repo.
Continue reading NET Microservices Architecture for Containerised NET ApplicationsHow do you achieve anonymity between publisher and subscriber? An easy way is to let a middleman take care of all the communication. An event bus is one such middleman.
Continue reading event bus interfaceI’m going to take a high-level overview of the Microsoft Azure Service Bus. I’ll discuss briefly the four services that make up the Service Bus.
Continue reading The Microsoft Azure Service BusPlaces I have been working they have banded the use of WebSockets to pushing data to the end-user, or devices. I want to delve into the concept of WebSocket introduced in HTML 5, security issues around the WebSocket model, and the best practices that should be adopted to address security issues around WebSocket.
Continue reading WebSocket Security IssuesA notification is a message that pops up on the user’s device. Notifications can be triggered locally by an open application, or they can be “pushed” from the server to the user even when the app is not running. They allow your users to opt-in to timely updates and allow you to effectively re-engage users with customised content.
Continue reading Push Notifications.NET Core 3.0, has shipped with the new System.Text.Json APIs, which provides built-in support for JSON, including reader/writer, read-only DOM, and serializer/deserializer. With the performance, the main improvement to the methods, check and see the typical speedups of up to 2x over Json.NET.
The new feature Async Streams in C# has removed the scalar result limitation and allows the async method to returns multiple results.
This change makes the async pattern more flexible so that you can retrieve data in lazy asynchronous sequence from a database or you can download data from an asynchronous sequence that returns the data in chunks when they become available.
Continue reading Async StreamsIt is possible to trick a user into executing potentially dangerous actions against the target site due to a lack of Cross- Site-Request-Forgery (CSRF) protections. CSRF attacks are a class of confused deputy attacks that exploit the behaviour of browsers always sending authorization cookies in requests. The target site has no secure way of verifying the request was initiated from a link on a trusted domain.
The SSL Certificate Details provide information about the certificate associated with the HTTPS server. This information describes important attributes of the certificate and should be reviewed for the correctness of the contact information, whether it is self-signed, and how soon it will expire. The Supported Ciphers provides information about each available encryption scheme available for each of the possible SSL/TLS protocols.
The expiration date for certificates should be monitored. New certificates should be available before the expiration date in order to maintain continuity of service and avoid downtime or displaying certificate expiration errors in users’ web browsers.
