Build project with docker build

The docker build⁠ command builds an image from a Dockerfile and a "context". A build’s context is the set of files located in the specified PATH or URL. Go to the directory with your Dockerfile and build the Docker image. The -t flag lets you tag your image so it's easier to find later using the docker images command.

docker build . -t ajcwebdev-docker

List Docker images with docker images

Your image will now be listed by Docker. The docker images⁠ command will list all top level images, their repository and tags, and their size.

docker images

Run the image

Run Docker container with docker run

Docker runs processes in isolated containers. A container is a process which runs on a host. The host may be local or remote. When an operator executes docker run⁠, the container process that runs is isolated in that it has its own file system, its own networking, and its own isolated process tree separate from the host. -d runs the container in detached mode, leaving the container running in the background. The -p flag redirects a public port to a private port inside the container.

docker run -p 49160:8080 -d ajcwebdev/ajcwebdev-docker

List containers with docker ps

To test your app, get the port of your app that Docker mapped:

docker ps

Print output of app with docker logs

docker logs <container id>

Call app using curl

curl -i localhost:49160