Cannot Import dbatools To Use With PowerShell Script Within Docker Container

[thall90]

I've created a script that uses dbatools to backup a remote database and restore it to another remote database. This script works well on my local machine, however when attempting to run said script within a Docker container built from an image based on the Amazon Linux 2 image, I consistently receive the following error on the line of the script that imports the dbatools module:

hostname: The term 'hostname' is not recognized as a name of a cmdlet, function, script file, or executable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

I've searched across these discussions and the issues list, but wasn't able to find any similar issues aside from this one, which is not the same as the issue that I'm experiencing. I posted here first, rather than creating an issue, because I feel like this is more likely related to a lack of knowledge on my part, rather than a bug. If that's not the case, however, please let me know and I'll create an issue instead.

I've attached a ZIP file including a trimmed-down version of the Dockerfile and PowerShell script (shown below) that can be used to reproduce the issue. There are also Build and Run PowerShell scripts included in the ZIP that can be used to create the image and start the container.

Thank you in advance for any assistance!

Test.ps1 :

$ErrorActionPreference = "Stop"

Import-Module dbatools # script fails here

Dockerfile:

# Create base layer to install tools which installer layers will use, but not to be used in final runner
FROM amazonlinux:2 as zipper
RUN yum update -y 
RUN yum install -y unixODBC.x86_64 \
  && yum install -y unixODBC-devel.x86_64 \
  && yum install -y util-linux \
  && yum install -y unzip \
  && yum install -y tar \
  && yum install -y gzip \
  && yum install -y gettext \
  && yum install -y jq \
  && yum install -y sudo

# Base layer to copy installation artifacts, confirm tool version information, etc
FROM zipper as base

COPY ./Test.ps1 /Test.ps1

# Download Powershell package
RUN curl https://packages.microsoft.com/config/rhel/8/prod.repo | sudo tee /etc/yum.repos.d/microsoft.repo

# Install PowerShell
RUN sudo yum install -y powershell
RUN pwsh -Version

# Install DBA Tools for PowerShell
RUN pwsh -c "Set-PSRepository -Name PSGallery -InstallationPolicy Trusted"
RUN pwsh -c "Install-Module dbatools -Scope AllUsers -Force" # I've tried several scopes / no scopes here, with no difference in result

ENTRYPOINT [ "pwsh", "Test.ps1" ]

DbaToolsIssueRepro.zip

[potatoqualitee]

this should be an easy fix, thanks for the report. it'll be fixed in dbatools 2.0

[potatoqualitee]

Hello, can you please run the the following command:

Install-Module dbatools -AllowPrerelease -Scope CurrentUser

then restart powershell, and try again.

this is prerelease2 of dbatools 2.0, which contains a ton of fixes