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Build your own Docker image

The docker-custom directory contains files you need to build your own images.

**

The steps to take to build your own images are:

1. package.json

  • Change the node-red version in package.json (from the docker-custom directory) to the version you require
  • Add optionally packages you require

2. docker-make.sh

Change the build arguments as needed:

  • --build-arg ARCH=amd64 : architecture your are building for (arm32v6, arm32v7, arm64v8, amd64)
  • --build-arg NODE_VERSION=10 : NodeJS version you like to use
  • --build-arg NODE_RED_VERSION=${NODE_RED_VERSION} : don't change this, ${NODE_RED_VERSION} gets populated from package.json
  • --build-arg OS=alpine : the linux distro you like to use (alpine or buster-slim)
  • --build-arg BUILD_DATE="$(date +"%Y-%m-%dT%H:%M:%SZ")" : don't change this
  • --build-arg PYTHON_VERSION=0 : add Python to your image (0=no Python, 2=Python 2.x, 3=Python 3.x)
  • --file Dockerfile-alpine.custom : Dockerfile to use to build your image (Dockerfile-alpine.custom or Dockerfile-slim.custom)
  • --tag mynodered:node-red-custom-build : set the image name and tag

3. Run docker-make.sh

```
$ ./docker-make.sh
```

This starts building your custom image and might take a while depending on the system you are running on.

When building is done you can run it by the following command:

```
$ docker run -it -p1880:1880 mynodered:node-red-custom-build
```

With the following command you can verify your docker image:

```
$ docker inspect testing:node-red-build
```

4. Advanced Configuration

`Dockerfile-alpine.custom` and `Dockerfile-slim.custom` can be modified as required, for example to add more tools. 

The scripts under `script` are used to determine if Python needs to be installed and fixed, as well to enable build-in support for gpio.