Cross Container Communication

Cross Container Communication

• We can use CCC to sent requests to 3rd party API, which is not the par of our Container. That feature works out of the box.
• We can communicate from COntainer to our local machine (mongoDB installed locally e.g.). For this we should use host.docker.internal instead of localhost (address) in all links (URL) which is responsible for connection.
• We can communicate with another Container. Basic solution: grab IP address of Container where we would like to sent a request and use it instead of localhost in URL.
• Docker Network - all Containers can communicate with each other and IPs are automatically resolved.
• To sent request from one Container to another simply put Container Name instead of localhost in URL.
• It's a good practice to have multiple Containers, where every Container focused on an one thing. App code (1t Container) and DB (2d Container) e.g.