GitHub action : How to set networkmode & hostname?
In the below GitHub CI job, cassandra container is launched on certain ports jobs: test: name: Test runs-on: [self-hosted, linux]
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Dockerfile – How to copy files from a local folder?
Below is the Dockerfile: FROM golang:1.14.10 MAINTAINER xyz COPY ~/go/bin/product-api /go/bin/product-api COPY ~/go/bin/swagger /go/bin/swagger ENTRYPOINT ["/go/bin/product-api"] on docker build -t
Continue readingNAMES column of "docker ps" output
Below is the docker file: FROM golang:1.14.10 MAINTAINER xyz ENV SOURCES /product-api COPY . ${SOURCES} WORKDIR /product-api RUN make swagger
Continue readingDockerfile – How to append PATH using ENV instruction?
The ENV instruction sets the environment variable to the value . This value will be in the environment for all
Continue readingDependsOn vs links – docker-compose vs ECS task
DependsOn property of ECS container definition is used for container dependencies Links property of docker compose provides service dependencies. We
Continue readingUser namespace – Why ecs_agent container launch as root owner?
Below is the ECS optimised AMI machine: $ cat /etc/os-release NAME=”Amazon Linux AMI” VERSION=”2018.03″ ID=”amzn” ID_LIKE=”rhel fedora” VERSION_ID=”2018.03″ PRETTY_NAME=”Amazon Linux
Continue readingSYSVInit support for setting cgroup limits
systemd service manager supports cgroups with below commands: systemd-cgls systemd-cgtop systemd-run systemctl set-property # applies the limits to a cgroup
Continue readingVersioning docker images in ECR – tagging
We are versioning master Jenkins(docker image) and storing in ECR with tag 0.1.$(git rev-parse –short head). Does this create collision
Continue readingECS::TaskDefinition – What is the maximum value of ‘Memory’ property?
here in this syntax of “ContainerDefinitions”:[{Memory:500}] in AWS::ECS::TaskDefinition, Memory property refers to virtual address space(hard limit) of docker container process
Continue readingdocker networking – host mode vs bridge mode – port mapping
In production, host mode networking is recommended over bridge mode to avoid packet forwarding overhead. $ docker container run –help
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