Dockerfile RUN call powershell on Ubuntu-based image

Question

I have the following in my Dockerfile:

# setup powershell
# Download the Microsoft repository GPG keys
RUN wget -q https://packages.microsoft.com/config/ubuntu/16.04/packages-microsoft-prod.deb
# Register the Microsoft repository GPG keys
RUN dpkg -i packages-microsoft-prod.deb
# Update the list of products
RUN apt-get update && apt-get install -y \
    libunwind8 \
    libicu55 \
    powershell
# Register Powershell repo
RUN powershell Register-PSRepository ...

According to everything I have read, this should work, however I get the following output during docker build (censored with sensitive info).

Processing triggers for libc-bin (2.23-0ubuntu11) ...
Setting up liburcu4:amd64 (0.9.1-3) ...
Setting up liblttng-ust-ctl2:amd64 (2.7.1-1) ...
Setting up liblttng-ust0:amd64 (2.7.1-1) ...
Setting up powershell (7.0.0-1.ubuntu.16.04) ...
Processing triggers for libc-bin (2.23-0ubuntu11) ...
Removing intermediate container 1ef0413ecd13
 ---> a5323d6c8301
Step 12/23 : RUN powershell Register-PSRepository     ...<snip>...
 ---> Running in 604784872cc8
/bin/sh: 1: powershell: not found
The command '/bin/sh -c powershell Register-PSRepository ...<snip>... returned a non-zero code: 127

I am at a loss as to why powershell is not found bearing in mind that apt-get install call for it was successful.

How do invoke powershell after successfully installing it using apt-get?

MaCadiz · Accepted Answer · 2020-05-14 14:14:48Z

1

After you install powershell, you should be able to call it using

pwsh

answered May 14, 2020 at 14:14

MaCadiz

1,82711 silver badges12 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

toadflakz · Accepted Answer · 2020-05-14 14:27:09Z

1

As discovered from this blog, the executable changed name from 5.1 to 6.0 (aka Powershell Core): https://www.starwindsoftware.com/blog/using-powershell-on-linux

For Powershell v1.0 - 5.1 - powershell.exe on Windows
For Powershell v6.0+ - pwsh.exe on Windows, invoked as pwsh on MacOS and Linux

So the correct call is:

RUN pwsh -Command Register-PSRepository ... <etc>

answered May 14, 2020 at 14:27

toadflakz

7,9441 gold badge29 silver badges41 bronze badges

Collectives™ on Stack Overflow

Dockerfile RUN call powershell on Ubuntu-based image

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related