ExPECA Docker Images
This guide provides an overview of Docker images stored in the ExPECA Docker Hub repository (expecahub).
When pulling or running these images, use the following format:
expecahub/<image-name>:<version>
The images here are “multi-architecture” images (amd64/arm64), and can be loaded onto our Dell workers as well as our Raspberry Pi workers.
Available Images
base
Image: expecahub/base:latest
A lightweight base image that provides:
SSH support - Allows secure access into the container using either a public or private IP address.
Docker-in-Docker (DIND) - Enables running Docker inside the container.
Environment Variables
Variable |
Description |
Required |
|---|---|---|
|
Root password |
Yes |
|
Custom DNS server |
No |
|
Custom network gateway |
No |
Toolbox
The image includes a “/root/toolbox” directory, under which you can find various scripts with corresponding user guides. These include:
Netfilter Tables script - Allows a container to forward traffic to another destination. Can, for example, be used to do port-forwarding of traffic coming in to a public IP address.
Network Emulator script - This script simulates network conditions using Linux tc (Traffic Control). It supports delay, jitter, loss, duplication, corruption, reordering, and rate limiting.
visual
Image: expecahub/visual:latest
A visualization image with integrated monitoring and networking capabilities:
Grafana, InfluxDB, and MQTT - Data visualization, database, and data broker/streaming applications.
SSH support - Allows secure access into the container using either a public or private IP address.
Docker-in-Docker (DIND) - Enables running Docker inside the container.
Environment Variables
Variable |
Description |
Required |
|---|---|---|
|
Root password |
Yes |
|
Username for the MQTT broker |
Yes |
|
Password for the MQTT broker |
Yes |
|
Custom DNS server |
No |
|
Custom network gateway |
No |
See “Data Visualization” user guide for more information about usage.