onsdigital/java-node-component repository overview

⁠java-node-component

⚠️ DEPRECATED: This image is no longer maintained and may be deleted at any time without further notice. ⚠️

Docker container for building a Java project that runs an application server on 8080 but also requires Node.js.

The purpose of this base image is to speed up builds. Docker will cache RUN git clone ..., so, for simplicity, ensuring the container builds with the latest code requires the use of docker build --no-cache .... That's slow if you start from a Java base image and reinstall Git and Maven every time.

This base image therefore provides those common steps so you can run with --no-cache and still minimise build time.

⁠Example component Dockerfile

from carboni.io/java-node-component

# Consul check

WORKDIR /etc/consul.d
RUN echo '{"service": {"name": "my-component", "port": 8080, "check": {"script": "curl http://localhost:8080 >/dev/null 2>&1", "interval": "10s"}}}' > my-component.json

# Check out code from Github

WORKDIR /usr/src
RUN git clone https://github.com/username/my-repo.git .
# Select branch
RUN git checkout release

# Build the component

RUN npm install
RUN mvn install -DskipTests

# Add command to the entry point script

RUN echo "java -jar target/*-jar-with-dependencies.jar" >> container.sh