Get a debug console on failing docker container launches.
Using docker compose I am building an image: docker compose build someservice Or directly via docker for example: docker build . But when I try to launch it: docker compose up -d But for some reason is unable to be launched and it is unexpectedly terminated. Via docker ps -a we detect our failing docker container for example: $ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES…
Docker containers sometimes fail to launch, resulting in unexpected termination. To diagnose the issue, you need to access a debug console. Begin by identifying the failing container using the command 'docker ps -a'. For instance, the container might be named 'blog-testprod-django-testprod-1'. To create a new image from the failing container, use the command 'docker commit container_id new_image_name'.
Replace 'container_id' with the ID of the failing container and 'new_image_name' with the desired name for the new image. Next, run the new image in a detached mode with an interactive shell by using the command 'docker run -it --rm --entrypoint /bin/bash new_image_name'. If the '/bin/bash' command is not available, use '/bin/sh' instead.
This process allows you to execute any diagnostic commands necessary to pinpoint the cause of the container's failure.
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