1. What Is Ngrok Ngrok is an intranet penetration tool that can publish services on the internal network to the public internet. The figure below illustrates its function well: Compared with a similar tool like Frp (which requires running both a Server and a Client), Ngrok turns intranet penetration into

1. Debugging Until You Want to Quit GitHub Actions is the continuous integration service GitHub launched in October 2018. For open-source projects it offers unlimited free build time, and it supports Linux, MacOs, and Windows systems, which makes it very appealing. But a recent experience changed my view. I submitted a commit, improvement: build and ci, to a colleague’s repository, to improve its continuous build setup.

1. Testing Is a Beacon at Sea The more complex and larger a project is, the more it demonstrates the value and importance of testing. Testing guarantees that the direction is right. Like a beacon appearing at sea while sailing, it can be used to check and correct the course, so the helmsman can stay aware of the situation at any moment and make adjustments.

1. On the Aesthetics of CICD Tools In the document A Software Product Is the Output of a Team’s Capability, I mentioned that a software product is the delivery vehicle for a solution, and that its quality depends on the team’s understanding of the core problem. Only with a deep understanding of the domain can the delivered product have a chance of being good.

1. daemon-less Image Build Tools 1.1 What Is a daemon-less Image Build Tool In a CICD pipeline, image builds come up often, and the conventional approach is to build with Docker in Docker or Docker out of Docker. For details, see: How to Use Docker in Docker In fact, to avoid monopolies and advance the industry, a unified OCI image format specification based on the Docker image format was defined long ago.