Why group name "docker" is not created on installation of docker on mac?
After running: brew cask install docker UNIX socket file is not part of docker group in my mac laptop(docker host)
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docker compose – What does external property signify under networks?
In the below docker-compose file: version: ‘2’ networks: network1: name: my-net driver: bridge external: true What does external property signify?
Continue readingHow to explicitly mention external volume name?
With the below docker-compose: version: ‘2’ volumes: myvolume: external: true networks: network1: name: my-app-net services: someservice: build: context: . volumes:
Continue readingMemory attribute of ContainerDefinitions
Docker container is a user space process(with pid) running in Docker host, but in separate process namespace(non-default), as shown below:
Continue readingVersion ‘5:19.03.4~3-0~ubuntu-bionic’ for ‘docker-ce’ was not found
Documentation provides syntax to install specific version of docker-ce: $ sudo apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io On same lines, below
Continue readingkeyserver receive failed: No data
Below is the docker file: FROM jenkins:2.60.3 ENV DEBIAN_FRONTEND=noninteractive USER root ARG DOCKER_GID=497 RUN groupadd -g ${DOCKER_GID:-497} docker ARG DOCKER_ENGINE=1.10.2
Continue readingdocker-compose : Why agent & app service fail due to hostname?
Below is the working docker-compose file in v2 spec: version: ‘2’ volumes: webroot: driver: local services: app: # Launch uwsgi
Continue readingHow to write in target folder with right permissions?
On first workflow, below command is run as user1 that works fine: docker cp $(docker-compose ps -q builder):/wheelhouse/. target in
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How content in "XDG_CACHE_HOME=/cache" different from the content in "-d /build"?
Below Dockerfile has environment variable XDG_CACHE_HOME=/cache that allows command, pip install -r requirements_test.txt to utilise local cache(as shown below) instead
Continue readingHeart beat logic – Kubernetes cluster vs HA cluster
One cluster type is HA cluster like Veritas cluster, Sun cluster, HACMP cluster has heartbeat logic. Another cluster type is
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