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Knot.x Docker Images

This project builds the docker images for the Knot.x

Build the images

You need to have installed docker on your machine.

To build the docker images locally, just launch:

$> ./gradlew build

Knot.x docker base Image

The built image contains the knotx command in the system path.

Using the base image

The image is intended to be used by extension using the Docker FROM directive. We use the Knot.x Docker image in the Knot.x Starter Kit - the best way to start a new Knot.x project.

FROM knotx/knotx:2.0.0

# Set the JVM Options
ENV JAVA_OPTS "-Dfoo=bar"

# Set vertx options
ENV VERTX_OPTS "-Dvertx.options.eventLoopPoolSize=26 -Dvertx.options.deployment.worker=true"

ENV APPLICATION_HOME=/usr/local/custom-app

### Customize logging, if needed
COPY ./logback.xml ${KNOTX_HOME}/conf/logback.xml                 

## Customize Clustering if needed
COPY ./my-cluster.xml ${KNOTX_HOME}/conf/my-cluster.xml
ENV CLUSTER_CONFIG, ${KNOTX_HOME}/conf/my-cluster.xml

## In order to supply your custom configuration of Knot.x modules you'd need to supply
## your custom config folder consisting of bootstrap.json and corresponding .conf files
ADD ./config ${KNOTX_HOME}/my-config
ENV KNOTX_MAIN_CONFIG ${KNOTX_HOME}/my-config/bootstrap.json

## Add new dependencies to the Knot.x stack, a dependencies to your custom code
COPY knotx-stack.json ${KNOTX_HOME}/knotx-stack.json
RUN knotx resolve -conf ${KNOTX_MAIN_CONFIG} && rm -rf ${HOME}/.m2

###
# The rest of the file should be fine.
###

# We use the "sh -c" to turn around https://github.com/docker/docker/issues/5509 - variable not expanded
ENTRYPOINT ["sh", "-c"]
CMD ["knotx", "run-knotx", "-conf $KNOTX_MAIN_CONFIG"]

You should know be able to build your custom executable image:

docker build -t mycompany/my-knotx .

And run your instance:

docker run -i -t -p 8092:8092 mycompany/my-knotx

Launching the base image

The resulting image is not made to be launched directly (as it contains only core knot.x and no default configurations). If you still want to launch it and see, whats in the image, just do:

docker run -i -t knotx/knotx

The knotx.x files are located in /usr/local/knotx/.

You can access the knotx command directly using:

docker run -p8092:8092 knotx/knotx

Or simply try to run a knotx in a container

docker run -p8092:8092 knotx/knotx knotx run-knotx

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Knot.x Docker image.

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