Recently, I got a Raspberry Pi 3 Model B. Now, I’d like to figure out, if I can run an F# server in a Docker container on it. I am aware that the currently installed Raspberry Pi OS is actually a 32-bit OS while the processor of my Pi has an 64-bit architecture. This has an impact if I’d like to install .NET directly on the OS. Since I intend to use Docker, I’ll sort that out later and just try to get it going.
Proof of principle
Try to run a container with .NET installed:
sudo docker run -it microsoft/dotnet:latest
Since I managed to spin up a .NET container, the next step is to create an F# console application and run it:
mkdir test
cd test
dotnet new console -lang "F#"
dotnet run
I am also able to run the dll file directy:
dotnet bin/Debug/netcoreapp2.1/test.dll
To exit the container and keep it running, I press [ctrl] + [p] followed by [ctrl] + [q].
Bind mount a host directory
First I create in the current directory a folder hostFolder containing a subfolder on the host system. I’ll mount hostFolder into the container below.
mkdir hostFolder
mkdir hostFolder/subfolder
Then I create a container from the image microsoft/dotnet:latest. Using the -v flag, I mount the hostFolder into the /targetFolder in the container. Note that the directory targetFolder is created in the root directory (/). The term "${PWD}"/hostFolder determines the path of the hostFolder to mount with ${PWD} being the current working directory. The part after the colon : with the path /targetFolder defines the mount point in the container. The -w flag determines the working directory in the container. Thus, I get directly into the /targetFolder/subFolder directory in the container.
sudo docker run -it \
-v "${PWD}"/hostFolder:/targetFolder \
-w /targetFolder/subfolder \
microsoft/dotnet:latest
For testing I create a test file within the subfolder on the container and see it on the host system.
sudo docker run -it -v "${PWD}"/Source/Repos/Lab/TestApp:/TestApp -w /TestApp microsoft/dotnet:latest
Add a Dockerfile
A Dockerfile describes how Docker creates an image and runs it. However, I’d like to develop on my Mac and try to setup the docker image there. Thus, I’ll setup a SAFE stack app on my Mac in another post.