balenalib/jetson-xavier-nx-devkit-seeed-2mic-hat-fedora-openjdk
This image is part of the balena.io base image series for IoT devices.
10K+
This image is part of the balena.io base image series for IoT devices. The image is optimized for use with balena.io and balenaOS, but can be used in any Docker environment running on the appropriate architecture.
.
Some notable features in balenalib
base images:
Helpful package installer script called install_packages
that abstracts away the specifics of the underlying package managers. It will install the named packages with smallest number of dependencies (ignore optional dependencies), clean up the package manager medata and retry if package install fails.
Working with dynamically plugged devices: each balenalib
base image has a default ENTRYPOINT
which is defined as ENTRYPOINT ["/usr/bin/entry.sh"]
, it checks if the UDEV
flag is set to true or not (by adding ENV UDEV=1
) and if true, it will start udevd
daemon and the relevant device nodes in the container /dev will appear.
For more details, please check the features overview in our documentation.
The balenalib
images come in many flavors, each designed for a specific use case.
:<version>
or :<version>-run
This is the defacto image. The run
variant is designed to be a slim and minimal variant with only runtime essentials packaged into it.
:<version>-build
The build variant is a heavier image that includes many of the tools required for building from source. This reduces the number of packages that you will need to manually install in your Dockerfile, thus reducing the overall size of all images on your system.
OpenJDK (Open Java Development Kit) is a free and open source implementation of the Java Platform, Standard Edition (Java SE). OpenJDK is the official reference implementation of Java SE since version 7.
Java is a registered trademark of Oracle and/or its affiliates.
.
The most straightforward way to use this image is to use a Java container as both the build and runtime environment. In your Dockerfile
, writing something along the lines of the following will compile and run your project:
FROM balenalib/jetson-xavier-nx-devkit-seeed-2mic-hat-fedora-openjdk:latest
COPY . /usr/src/myapp
WORKDIR /usr/src/myapp
RUN javac Main.java
CMD ["java", "Main"]
You can then run and build the Docker image:
$ docker build -t my-java-app .
$ docker run -it --rm --name my-running-app my-java-app
There may be occasions where it is not appropriate to run your app inside a container. To compile, but not run your app inside the Docker instance, you can write something like:
$ docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp balenalib/jetson-xavier-nx-devkit-seeed-2mic-hat-fedora-openjdk:latest javac Main.java
This will add your current directory as a volume to the container, set the working directory to the volume, and run the command javac Main.java
which will tell Java to compile the code in Main.java
and output the Java class file to Main.class
.
If you have any problems with or questions about this image, please contact us through a GitHub issue.
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.
Documentation for this image is stored in the base images documentation. Check it out for list of all of our base images including many specialised ones for e.g. node, python, go, smaller images, etc.
You can also find more details about new features in balenalib
base images in this blog post
docker pull balenalib/jetson-xavier-nx-devkit-seeed-2mic-hat-fedora-openjdk