01-hello-world

#!/bin/dash

docker container rm -f myAlpine
docker image rm -f alpine:3.11

clear
set -v

# We need to pull an image into our local catch.

docker image pull alpine:3.11

# Run the image in a container with

docker container run -it --rm --name myAlpine alpine:3.11

# we can override the default command (the default in Alpine is /bin/sh)

read x

docker container run -it --rm --name myAlpine alpine:3.11 ping -c 5 sun.com

# when finished the container closes down -- note --rm option

read x

# Container status

# Run a container in daemon mode,

docker container run -d --name myAlpine alpine /bin/sh -c 'trap exit TERM; while echo $(( i += 1));do sleep 5;done'

# container status: use the docker `container ls` and `docker container inspect ...` commands

docker container ls

docker container inspect --format '{{.State.Status}}' myAlpine

read x

# now stop the container

docker container stop myAlpine

docker container ls

read x

# So has the container gone? Let's look deeper

docker container inspect --format '{{.State.Status}}' myAlpine

read x

# use docker container ls -a instead

docker container ls -a

read x

# Use the command `docker container rm ....`

docker container rm myAlpine

docker container inspect --format '{{.State.Status}}' myAlpine

read x

# let's look at container logs

docker container run -d --name myAlpine alpine /bin/sh -c 'trap exit TERM; while echo $(( i += 1));do sleep 5;done'

read x

# let's look at the logs

docker container logs myAlpine

read x

# let's tail the logs (Ctrl-C to exit)

docker container logs --follow myAlpine