Pin PowerShell to 7.5.5 on CBL-Mariner 2.0

[Copilot]

PowerShell 7.6 depends on dotnet-runtime-10.0, which was never published to the Mariner 2.0 prod feed, causing image builds to fail at dependency resolution.

Changes

• src/cbl-mariner/2.0/fpm/amd64/Dockerfile — pin powershell → powershell-7.5.5
• src/cbl-mariner/2.0/crossdeps/amd64/Dockerfile — pin powershell → powershell-7.5.5

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Error installing PowerShell 7.6 on Mariner 2.0</issue_title>
<issue_description>```

[2/3] RUN tdnf update -y && tdnf install -y ca-certificates git util-linux wget awk cmake diffutils icu tar zlib-devel glibc-devel kernel-headers lttng-ust-devel python3-pip lldb-devel azure-cli powershell:
29.07 Testing transaction
29.08 Running transaction
29.08 Installing/Updating: libarchive-3.6.1-9.cm2.x86_64
29.11 Removing: libarchive-3.6.1-8.cm2.x86_64
29.23 Loaded plugin: tdnfrepogpgcheck
29.31 [using capability match for 'awk']
29.31 [using capability match for 'awk']
41.13 1. nothing provides dotnet-runtime-10.0 needed by powershell-7.6.0-1.cm.x86_64
41.13 Found 1 problem(s) while resolving
41.13 Error(1301) : Solv general runtime error

The powershell 7.6 package depends on dotnet-runtime-10.0 but 10.0 was never published to prod feed for Mariner 2.0. The Dockerfiles should be changed to use powershell 7.5 instead to work around issue.</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Error installing PowerShell 7.6 on Mariner 2.0 #1618

---

📱 Kick off Copilot coding agent tasks wherever you are with GitHub Mobile, available on iOS and Android.

[mthalman]

@copilot - Can we just do 7.5 instead?

[Copilot]

@copilot - Can we just do 7.5 instead?

Done, updated to powershell-7.5 in both Dockerfiles (commit 4fe7936).

[wfurt]

do we even still need this? AFAIK mariner is EOL for quite some time....

[mthalman]

do we even still need this? AFAIK mariner is EOL for quite some time....

The plan is to remove it next month: #1617 (comment)

[mthalman]

@copilot - change this to install version 7.5.5

[Copilot]

@copilot - change this to install version 7.5.5

Done, updated to powershell-7.5.5 in both Dockerfiles (commit cb8cb08).