- Docker images are build using Dockerfile definitions
- E.g. hello-world image:
FROM scratch:latest COPY hello / CMD ["/hello"] - Where 'scratch' is name of a base image, in this case most basic image 'scratch:latest'
- 'COPY' command copies executable file 'hello' to the root of file system
- 'CMD' is a command executed when the container is running
- Elastic Search offers number of ready-to-use docker images
- To run elastic search open-source official image:
sudo docker run -d -p 9201:9200 -e "http.host=0.0.0.0" \ -e "transport.host=127.0.0.1" \ docker.elastic.co/elasticsearch/elasticsearch:7.14.0 - -d: run in a detached mode
- -e: define listener ip for API and for cluster communication
- -p: map host port to container port