Using dotnet-ef with docker and asp.net core 3.1

Question

I'm trying to run my application written in asp.net core 3.1 on docker. I need to create database using migrations. While executing dotnet ef database update; command I get:

Could not execute because the specified command or file was not found.
Possible reasons for this include:
* You misspelled a built-in dotnet command.
* You intended to execute a .NET Core program, but dotnet-ef does not exist.
* You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.

As I understand I need to install dotnet-ef tool. What is a correct way to do it in the container?

The problem was that there is a need to type ENV PATH="${PATH}:/root/.dotnet/tools" instead of RUN export PATH="$PATH:/root/.dotnet/tools" — SigGP, Feb 08 '20 at 20:02
Great - if you think the other thread doesn't answer your question, you should put an answer here. :-) — Jeppe, Feb 09 '20 at 11:29

score 9 · Answer 1 · answered Jun 23 '22 at 08:35

9

Like @harili said, you have to install it and additionally add it to the PATH environment variable.

From Dockerfile:

RUN dotnet tool install --global dotnet-ef
ENV PATH="$PATH:/root/.dotnet/tools"

answered Jun 23 '22 at 08:35

Vočko

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confirmed this is the final solution to let dotnet-ef work in the docker build, without exposing the path into the environment variable the dotnet-ef won't work. – Duy Hoang Aug 07 '22 at 03:42
It works. Happy that found this solution after a night of fiddling with dockerfile. – Ань Каирри Oct 28 '22 at 03:25

harili · Answer 2 · 2023-08-03T10:13:35.880

0

It's maybe you didn't installed the EF tools :

dotnet tool install --global dotnet-ef

And added the Environment PATH as @Vočko suggested :

ENV PATH="$PATH:/root/.dotnet/tools"

edited Aug 03 '23 at 10:13

answered Nov 28 '21 at 19:11

harili

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not working, as it wasn't added into PATH – rrymar Jul 04 '23 at 08:15

Using dotnet-ef with docker and asp.net core 3.1

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