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2. what is 'z' flag in docker container's volumes-from option?

   stackoverflow.com/questions/35218194

   Two suffixes :z or :Z can be added to the volume mount. These suffixes tell Docker to relabel file objects on the shared volumes. The z option tells Docker that the volume content will be shared between containers. Docker will label the content with a shared content label. Shared volumes labels allow all containers to read/write content.

3. Understanding docker run -v command - Stack Overflow

   stackoverflow.com/questions/32269810

   123. The -v (or --volume) argument to docker run is for creating storage space inside a container that is separate from the rest of the container filesystem. There are two forms of the command. When given a single argument, like -v /var/lib/mysql, this allocates space from Docker and mounts it at the given location.

4. How to clean up Docker - Stack Overflow

   stackoverflow.com/questions/45798076

   The docker/aufs/diff folder contains 152 folders ending in -removing. I already ran the following commands to clean up. Kill all running containers: # docker kill $(docker ps -q) Delete all stopped containers. # docker rm $(docker ps -a -q) Delete all images. # docker rmi $(docker images -q) Remove unused data.

5. Docker - a way to give access to a host USB or serial device?

   stackoverflow.com/questions/24225647

   There are a couple of options. You can use the --device flag that use can use to access USB devices without --privileged mode: docker run -t -i --device=/dev/ttyUSB0 ubuntu bash. Alternatively, assuming your USB device is available with drivers working, etc. on the host in /dev/bus/usb, you can mount this in the container using privileged mode ...

6. How to list containers in Docker - Stack Overflow

   stackoverflow.com/questions/16840409

   To list all running containers (just stating the obvious and also example use of -f filtering option) docker ps -a -f status=running. To list all running and stopped containers, showing only their container id. docker ps -aq. To remove all containers that are NOT running. docker rm `docker ps -aq -f status=exited`.

7. dockerfile - what is docker run -it flag? - Stack Overflow

   stackoverflow.com/questions/48368411

   72. docker run -it ubuntu:xenial /bin/bash starts the container in the interactive mode (hence -it flag) that allows you to interact with /bin/bash of the container. That means now you will have bash session inside the container, so you can ls, mkdir, or do any bash command inside the container.

8. Resize disk usage of a Docker container - Stack Overflow

   stackoverflow.com/questions/37100065

   First make sure your storage dirver is a devicemapper with: you can also check current max-size of container with: (default 10 gb) From devicemapper documentation. 1) edit dm.basesize in etc/docker/daemon.json file, or create new one if does not exist. "storage-opts": [. "dm.basesize=30G". 2) restart docker deamon.

9. How do I pass environment variables to Docker containers?

   stackoverflow.com/questions/30494050

   27. There is a nice hack how to pipe host machine environment variables to a Docker container: env > env_file && docker run --env-file env_file image_name. Use this technique very carefully, because env > env_file will dump ALL host machine ENV variables to env_file and make them accessible in the running container. edited Dec 29, 2022 at 1:53.

10. Docker run -p ?/? (what are this two port numbers and what they...

    stackoverflow.com/questions/62125794

    the second one : is the port used by your application. Example : I want to run tomcat server in a docker container, the default port of tomcat is 8080 and I want to expose my docker on port 9000 so i have to write : docker run -p 9000:8080 --name myTomcatContainer tomcat. So with this configuration I can access to Tomcat from outside using ...

11. Run docker service on HTTPS - Stack Overflow

    stackoverflow.com/questions/50810165

    Currently, I run a simple docker container by using the following files. DockerFile FROM microsoft/aspnet:4.7.1 WORKDIR /inetpub/wwwroot EXPOSE 80 COPY index.html . docker-compose.yml version: ...