A singleton bean in Spring and the singleton pattern are quite different. Singleton pattern says that one and only one instance of a particular class will ever be created per classloader. The scope of a Spring singleton is described as “per container per bean”. It is the scope of bean definition to a single object … Read more
Firstly you need to install a SSH server in the images you wish to ssh-into. You can use a base image for all your container with the ssh server installed. Then you only have to run each container mapping the ssh port (default 22) to one to the host’s ports (Remote Server in your image), … Read more
It seems lsb_release is not installed. you can install it via apt-get update && apt-get install -y lsb-release && apt-get clean all
To make an Image fill its parent, simply wrap it into a FittedBox: FittedBox( child: Image.asset(‘foo.png’), fit: BoxFit.fill, ) FittedBox here will stretch the image to fill the space. (Note that this functionality used to be provided by BoxFit.fill, but the API has meanwhile changed such that BoxFit no longer provides this functionality. FittedBox should … Read more
Kubernetes provides us with multiple options on how to use these commands: When you override the default Entrypoint and Cmd in Kubernetes .yaml file, these rules apply: If you do not supply command or args for a Container, the defaults defined in the Docker image are used. If you supply only args for a Container, … Read more
If you’re using docker-compose, you can set the your_service.shm_size value if you want your container to use that /dev/shm size when running or your_service.build.shm_size when building. Example: version: ‘3.5’ services: your_service: build: context: . shm_size: ‘2gb’ <– this will set the size when BUILDING shm_size: ‘2gb’ <– when RUNNING Link to source.
For docker run: Simply add the option –user <user> to change to another user when you start the docker container. docker run -it –user nobody busybox For docker attach or docker exec: Since the command is used to attach/execute into the existing process, therefore it uses the current user there directly. docker run -it busybox … Read more
If you don’t want to map ports from your host to the container you can access directly to the docker range ip for the container. This range is by default only accessed from your host. You can check your container network data doing: docker inspect <containerNameOrId> Probably is better to filter: docker inspect <containerNameOrId> | … Read more
According to the heapq documentation, the way to customize the heap order is to have each element on the heap to be a tuple, with the first tuple element being one that accepts normal Python comparisons. The functions in the heapq module are a bit cumbersome (since they are not object-oriented), and always require our … Read more
You can specify the arguments directly in your docker-compose file: node1: build: context: node1 args: ADMIN_USERNNAME: weblogic1 ADMIN_PASSWORD: weblogic1 ADMIN_NAME: admin1 image: node1 container_name: node1 See a full example: MWE The official docs have all detail.