In this post, we are sharing Docker image for OpenCV 3.4.3, and the recently released OpenCV 3.4.4 and OpenCV 4.0. In addition to OpenCV, the image also has dlib and a Facial Landmark Detection example code.
Every day we receive a few emails and comments on our posts about OpenCV and Dlib installation. Even with the detailed and tested instructions, sometimes it is tough for people to get a system up and running. So, we have been thinking of providing a solution for people who have struggled with installation issues.
Why a locally-bound proxy doesn't work The Problem. If you're running a locally-bound proxy, e.g. Listening on 127.0.0.1:8989, it WON'T WORK in Docker for Mac.From the Docker documentation. I want to connect from a container to a service on the host. The Mac has a changing IP address (or none if you have no network access).
Docker For Mac Vs Docker Machine 2020
When the Docker Desktop application starts, it copies the /.docker/certs.d folder on your Mac to the /etc/docker/certs.d directory on Moby (the Docker Desktop xhyve virtual machine). You need to restart Docker Desktop after making any changes to the keychain or to the /.docker/certs.d directory in order for the changes to take effect. Docker Desktop stores Linux containers and images in a single, large “disk image” file in the Mac filesystem. This is different from Docker on Linux, which usually stores containers and images in the /var/lib/docker directory. On my Mac with MacOS 10.14.6 Mojave, running Docker version 19.03.8 that single large file can be found at. In my situation, I changed my data location of my docker engine to some folder /some/folder, and today I just changed it back to /var/lib/docker. Then did a docker system prune to remove all the volumes, overlays, images etc. After a reload of docker-daemon, and a restart of docker-engine. This problem happened. @tagiris123, I suggest you to stop the docker engine first, by systemctl stop. Download from Docker Hub. By downloading Docker Desktop, you agree to the terms of the Docker Software End User License Agreement and the Docker Data Processing Agreement. What to know before you install System Requirements. Windows 10 64-bit: Pro, Enterprise, or Education (Build 16299 or later).
One way to solve this problem is to provide a Virtual Machine (VM) with all the libraries installed. A huge downside of using a VM is the large file people need to download. Sometimes it can be 10s of GBs.
A smarter and newer way to solve this problem is to provide a Docker image. Typically a Docker image size is much smaller than a VM. Our Docker image, for example, is just 1 GB in size (compressed size). In addition, it starts much faster than a VM and typically runs applications much faster compared to a VM. Docker is just one of those minimal things that can make your life exceedingly simple.
Also, as we’ll see, the same docker image can be used on Windows, Ubuntu and MacOS. If you are stuck with OpenCV installation or if you want to try out the new OpenCV-3.4.4 and OpenCV-4.0 ( released on 20th November 2018 ), without actually installing it on your system, this docker image is the perfect match for you.
This post is split into five sections
1. Docker Installation
In this section, we will learn how to install Docker on Ubuntu, MacOS, and Windows.
1.1 Installing Docker on Ubuntu
1.2 Installing on MacOS
The whale in the top status bar indicates that Docker is running, and accessible from a terminal.
1.3 Installing Docker Toolbox in Windows 7 or above
2 Install Docker OpenCV Image
The docker image has been updated to enable X11-Forwarding and now also contain an example to test installation. Use docker pull to get the latest image.
To use the docker image, use the following instructions:
Once, the image is downloaded, we can start it using the following command
Let’s take a moment to examine this command in detail:
The image has OpenCV 3.4.3 installed in /usr/local, OpenCV 3.4.4 in ~/installation/OpenCV-3.4.4 and OpenCV 4.0.0 in ~/installation/OpenCV-master.
To use Python environments:
For OpenCV 3.4.3,
Once you are in the iPython prompt, do
To deactivate the virtual environment use
Docker For Mac 17.03 Download Windows 10
Similarly for OpenCV 3.4.4 and OpenCV 4.0.0,
Once you are in the iPython prompt, do
Docker Desktop For Mac Download
To deactivate the virtual environment type
Once you are in the iPython prompt, do
3 Run Facial Landmark Detection on Docker Image
To test the installation of OpenCV and dlib on the docker image, we have provided a Facial Landmark detection example that you can try out.
4 How to commit changes to Docker Image
By default, whatever changes you make in your docker image are NOT saved.
To commit changes made to the docker image, we need to follow the steps below. We will refer to the image of the terminal below as an example
Hope you have fun hacking with Docker! ? If you have any queries, comment below and we will get back to you as soon as possible.
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December 2020
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