The article discusses the configuration challenges faced when attempting to connect a portal container to a MariaDB database running on the host machine. It emphasizes the importance of setting up network configurations properly, particularly when using multiple networks (internal and external). The `host.docker.internal` directive is highlighted as a way to access the host's services, but issues such as 'No route to host' indicate potential misconfigurations. The article underlines the complexity of Docker networking, especially in diverse scenarios involving container-interactions and external databases.
It is crucial to ensure that the container has proper network configurations to access external services like MariaDB, particularly when using multiple networks.
The `extra_hosts` directive can be utilized to establish a connection from Docker containers to services running on the host machine efficiently.
It's important to distinguish between the internal and external networks set up in Docker, especially when containers need to interact with both local resources and external networks.
Using `host.docker.internal` allows access to services on the host, but ensuring correct network settings can be complex when multiple networks are involved.
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