embark-docker/README.md

Embark for Docker

Quick start

In a Bash shell:

source <(curl 'https://raw.githubusercontent.com/embark-framework/embark-docker/master/run.sh')
run_embark demo
cd embark_demo
run_embark

With overrides:

export EMBARK_DOCKER_EXTRA_RUN_OPTS='--rm'
export EMBARK_DOCKER_IMAGE=statusim/embark
export EMBARK_DOCKER_TAG=custom
export EMBARK_DOCKERFILE='https://github.com/embark-framework/embark-docker.git#some/branch'
export EMBARK_VERSION='embark-framework/embark#features/branch'
export NODE_TAG=10.7.0
export RUNNER='https://raw.githubusercontent.com/embark-framework/embark-docker/some/branch/run.sh'

docker build \
       --build-arg EMBARK_VERSION=$EMBARK_VERSION \
       --build-arg NODE_TAG=$NODE_TAG \
       -t $EMBARK_DOCKER_IMAGE:$EMBARK_DOCKER_TAG \
       $EMBARK_DOCKERFILE

source <(curl $RUNNER)
run_embark demo
cd embark_demo
run_embark

Review the Dockerfile and run.sh for all possible overrides.

Shortcuts

These are equivlent:

run_embark

run_embark run

run_embark embark run

The following are also equivalent:

run_embark demo

run_embark embark demo

The same is true for the rest of the embark commands. To see the full list:

run_embark --help

Compound commands

A single command with options can be supplied directly:

run_embark bash

run_embark ps -ef

Compound commands should be passed to bash -[i]c:

run_embark bash -c 'exec bash << "SCRIPT"

simple_nodeenv 10.7.0 my_node
node --version
echo $(which node)
npm i -g http-server
exec http-server -p 10000

SCRIPT
'

When executing compound commands via docer exec in a running embark container, su-exec and bash -ic can be used together:

docker exec -it <container-id> su-exec embark \
       bash -ic 'exec bash << "SCRIPT"

simple_nodeenv 10.7.0 my_other_node
npm i -g http-server
exec http-server -p 10001

SCRIPT
'

Alternatively, to go non-interactive, manually source the embark user's .bash_env:

docker exec -it <container-id> su-exec embark \
       bash -c 'exec bash << "SCRIPT"

. ~/.bash_env
simple_nodeenv 10.7.0 more_nodez
npm i -g http-server
exec http-server -p 10002

SCRIPT
'

Updating versions

• Open Dockerfile
• On the ARG directives, update necessary versions.

Building

Building requires Docker to be installed on your local machine.

Scripted

If you have Ruby installed in your system, run:

$ ruby script/build

To release, add --release as a parameter of the build script.

Manually

Building and releasing manually isn't too hard either, but there are a couple steps.

Tags

To facilitate the images being found, we tag them with the following rules (as an example, the 3.1.5 version will be used.)

• Tag with statusim/embark:latest if 3.1.5 is the latest version.
• Tag with statusim/embark:3.1.5
• Tag with statusim/embark:3.1 if 3.1.5 is the highest patch level on 3.1
• Tag with statusim/embark:3 if 3.1.5 is the highest minor and patch level on 3

Generating the image

To generate the image, run:

docker build . -t statusim/embark:<version> [...tags]

Releasing

Releasing requires that you're authenticated to Docker Hub. To do so, run:

$ docker login

Scripted

If you have Ruby installed in your system, run:

$ ruby script/build --release

Manual

Pushing the tags manually implies that the image has been previously built. To push your local images, run:

docker push statusim/embark:version