(request to add to debian distro - added it here so i could track it)

Dockerscript

Builds an image and runs container from Dockerfile via docker script command

Basic Usage

docker script from ubuntu

"from ubuntu" is a valid Dockerfile; therefore, this command runs a container of a latest Ubuntu release image and attaches a tty to it; you can <Ctrl-D> to stop and remove both container and image

Installation

• from Ubuntu PPA:

add-apt-repository ppa:babochenko/ppa
apt-get update
apt-get install dockerscript

• from sources:

sudo ./gradlew installBuildDependencies
./gradlew assemble
sudo ./gradlew install

Motivation

This plugin is an elementary effort to try make docker more accessible for basic prototyping. Some of prototyping use cases might be:

• testing out some script / functionality in an isolated environment before running it locally
• executing same Dockerfile in different Linux distributions to verify that it works on each of them

This plugin tries to make such simple tasks doable in as few lines of code as possible

While you could always use a simple shell script which combines docker build and docker run with additional resource cleanup commands, this workflow is not very transferable - it would be better to have a single reusable plugin

(I believe that tools like this one might make Docker a casual tool rather than a strictly devops tool, which is what it's generally considered to be, at least from my experience)

Extended Examples

docker script command can be run in a directory containing a Dockerfile, just like docker build (execution results are presented as comments):

echo "FROM alpine
CMD echo Dockerfile executed on $(uname)" > Dockerfile

docker script . --build "--build-arg KEY=VALUE"
# Dockerfile executed on Linux, with custom build option --build-arg

Also docker plugin can execute Docker commands from stdin...

docker script << 'EOF'
    from alpine
    RUN echo 'in RUN'
    CMD echo 'in CMD'
EOF
# in RUN
# in CMD

... or from string input:

docker script "
    from alpine
    RUN echo 'in RUN'
    CMD echo 'in CMD'"
# in RUN
# in CMD

following command allocates a TTY in container and lets you execute arbitrary commands:

docker script from ubuntu

Also, you could run single dockerfile on different distributions:

for linux in alpine ubuntu debian 'vcatechnology/linux-mint'; do
    echo "executing Dockerfile in ${linux}"
    docker script "
        from ${linux}
        CMD uname -r"
done