diff --git a/src/powershell/install.sh b/src/powershell/install.sh
index 4953a49d8..d1eb93d3d 100755
--- a/src/powershell/install.sh
+++ b/src/powershell/install.sh
@@ -17,18 +17,86 @@ POWERSHELL_MODULES="${MODULES:-""}"
 POWERSHELL_PROFILE_URL="${POWERSHELLPROFILEURL}"
 
 MICROSOFT_GPG_KEYS_URI="https://packages.microsoft.com/keys/microsoft.asc"
-POWERSHELL_ARCHIVE_ARCHITECTURES="amd64"
+#MICROSOFT_GPG_KEYS_URI=$(curl https://packages.microsoft.com/keys/microsoft.asc -o /usr/share/keyrings/microsoft-archive-keyring.gpg)
+POWERSHELL_ARCHIVE_ARCHITECTURES_UBUNTU="amd64"
+POWERSHELL_ARCHIVE_ARCHITECTURES_ALMALINUX="x86_64"
 POWERSHELL_ARCHIVE_VERSION_CODENAMES="stretch buster bionic focal bullseye jammy bookworm noble"
 GPG_KEY_SERVERS="keyserver hkp://keyserver.ubuntu.com
 keyserver hkp://keyserver.ubuntu.com:80
 keyserver hkps://keys.openpgp.org
-keyserver hkp://keyserver.pgp.com"
+keyserver hkp://keyserver.pgp.com
+keyserver hkp://keyserver.fedoraproject.org
+keyserver hkps://keys.openpgp.org
+keyserver hkp://pgp.mit.edu
+keyserver hkp://keyserver.redhat.com"
+
 
 if [ "$(id -u)" -ne 0 ]; then
     echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
     exit 1
 fi
 
+# Clean up package manager cache
+clean_cache() {
+    if [ -d "/var/cache/apt" ]; then
+        apt-get clean
+    fi
+    if [ -d "/var/cache/dnf" ]; then
+        rm -rf /var/cache/dnf/*
+    fi
+}
+# Install dependencies for RHEL/CentOS/AlmaLinux (DNF-based systems)
+install_using_dnf() {
+   dnf remove -y curl-minimal
+   dnf install -y curl gnupg2 ca-certificates dnf-plugins-core
+   dnf clean all
+   dnf makecache
+   curl --version
+}
+
+# Install PowerShell on RHEL/CentOS/AlmaLinux-based systems (DNF)
+install_powershell_dnf() {
+    # Install wget, if not already installed
+    dnf install -y wget
+
+    # Download Microsoft GPG key
+    curl https://packages.microsoft.com/keys/microsoft.asc -o /usr/share/keyrings/microsoft-archive-keyring.gpg
+    ls -l /usr/share/keyrings/microsoft-archive-keyring.gpg
+
+    # Install necessary dependencies
+    dnf install -y krb5-libs libicu openssl-libs zlib
+
+    # Add Microsoft PowerShell repository 
+        curl "https://packages.microsoft.com/config/rhel/9.0/prod.repo" > /etc/yum.repos.d/microsoft.repo
+    
+    # Install PowerShell
+     dnf install --assumeyes powershell
+}
+
+
+# Detect the package manager and OS
+detect_package_manager() {
+    if [ -f /etc/os-release ]; then
+        . /etc/os-release
+        if [[ "$ID" == "ubuntu" || "$ID" == "debian" ]]; then
+            echo "Detected Debian/Ubuntu-based system"
+            install_using_apt
+            install_pwsh
+        elif [[ "$ID" == "centos" || "$ID" == "rhel" || "$ID" == "almalinux" ]]; then
+            echo "Detected RHEL/CentOS/AlmaLinux-based system"
+            install_using_dnf
+            install_powershell_dnf
+            install_pwsh
+        else
+            echo "Unsupported Linux distribution: $ID"
+            exit 1
+        fi
+    else
+        echo "Could not detect OS"
+        exit 1
+    fi
+}
+
 # Figure out correct version of a three part version number is not passed
 find_version_from_git_tags() {
     local variable_name=$1
@@ -72,10 +140,31 @@ apt_get_update()
 }
 
 # Checks if packages are installed and installs them if not
-check_packages() {
-    if ! dpkg -s "$@" > /dev/null 2>&1; then
-        apt_get_update
-        apt-get -y install --no-install-recommends "$@"
+   check_packages() {
+    if command -v dpkg > /dev/null 2>&1; then
+        # If dpkg exists, assume APT-based system (Debian/Ubuntu)
+        for package in "$@"; do
+            if ! dpkg -s "$package" > /dev/null 2>&1; then
+                echo "Package $package not installed. Installing using apt-get..."
+                sudo apt-get update
+                sudo apt-get install -y --no-install-recommends "$package"
+            else
+                echo "Package $package is already installed (APT)."
+            fi
+        done
+    elif command -v rpm > /dev/null 2>&1 && command -v dnf > /dev/null 2>&1; then
+        # If rpm and dnf exist, assume DNF-based system (RHEL/AlmaLinux)
+        for package in "$@"; do
+            if ! rpm -q "$package" > /dev/null 2>&1; then
+                echo "Package $package not installed. Installing using dnf..."
+                 dnf install -y "$package"
+            else
+                echo "Package $package is already installed (DNF)."
+            fi
+        done
+    else
+        echo "Unsupported package manager. Neither APT nor DNF found."
+        return 1
     fi
 }
 
@@ -83,8 +172,10 @@ install_using_apt() {
     # Install dependencies
     check_packages apt-transport-https curl ca-certificates gnupg2 dirmngr
     # Import key safely (new 'signed-by' method rather than deprecated apt-key approach) and install
+   
     curl -sSL ${MICROSOFT_GPG_KEYS_URI} | gpg --dearmor > /usr/share/keyrings/microsoft-archive-keyring.gpg
     echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/microsoft-archive-keyring.gpg] https://packages.microsoft.com/repos/microsoft-${ID}-${VERSION_CODENAME}-prod ${VERSION_CODENAME} main" > /etc/apt/sources.list.d/microsoft.list
+    
 
     # Update lists
     apt-get update -yq
@@ -202,7 +293,12 @@ install_using_github() {
         check_packages git
     fi
     if [ "${architecture}" = "amd64" ]; then
+        architecture="amd64"
+        elif [ "${architecture}" = "x86_64"]; then 
+        architecture="x86_64"
+        else
         architecture="x64"
+        
     fi
     pwsh_url="https://github.com/PowerShell/PowerShell"
     find_version_from_git_tags POWERSHELL_VERSION $pwsh_url
@@ -212,7 +308,12 @@ install_using_github() {
     fi
 
     # Ugly - but only way to get sha256 is to parse release HTML. Remove newlines and tags, then look for filename followed by 64 hex characters.
-    curl -sSL -o "release.html" "https://github.com/PowerShell/PowerShell/releases/tag/v${POWERSHELL_VERSION}"
+    #curl -sSL -o "release.html" "https://github.com/PowerShell/PowerShell/releases/tag/v${POWERSHELL_VERSION}" 
+    wget https://github.com/PowerShell/PowerShell/releases/download/v${POWERSHELL_VERSION}/${powershell_filename}
+    mkdir ~/powershell
+    tar -xvf powershell-${POWERSHELL_VERSION}-linux-x64.tar.gz -C ~/powershell
+
+
     powershell_archive_sha256="$(cat release.html | tr '\n' ' ' | sed 's|<[^>]*>||g' | grep -oP "${powershell_filename}\s+\K[0-9a-fA-F]{64}" || echo '')"
     if [ -z "${powershell_archive_sha256}" ]; then
         echo "(!) WARNING: Failed to retrieve SHA256 for archive. Skipping validaiton."
@@ -233,14 +334,22 @@ if ! type pwsh >/dev/null 2>&1; then
     
     # Source /etc/os-release to get OS info
     . /etc/os-release
-    architecture="$(dpkg --print-architecture)"
+    architecture="$(uname -m)"
+    if [[ "$ID" == "ubuntu" || "$ID" == "debian" ]]; then
+        POWERSHELL_ARCHIVE_ARCHITECTURES="${POWERSHELL_ARCHIVE_ARCHITECTURES_UBUNTU}"
+    elif [[ "$ID" == "centos" || "$ID" == "rhel" || "$ID" == "almalinux" ]]; then
+        POWERSHELL_ARCHIVE_ARCHITECTURES="${POWERSHELL_ARCHIVE_ARCHITECTURES_ALMALINUX}"
+    fi
 
-    if [[ "${POWERSHELL_ARCHIVE_ARCHITECTURES}" = *"${architecture}"* ]] && [[  "${POWERSHELL_ARCHIVE_VERSION_CODENAMES}" = *"${VERSION_CODENAME}"* ]]; then
+    if [[ "${POWERSHELL_ARCHIVE_ARCHITECTURES}" = *"${POWERSHELL_ARCHIVE_ARCHITECTURES_UBUNTU}"* ]] && [[  "${POWERSHELL_ARCHIVE_VERSION_CODENAMES}" = *"${VERSION_CODENAME}"* ]]; then
         install_using_apt || use_github="true"
-    else
-        use_github="true"
-    fi
+    elif [[ "${POWERSHELL_ARCHIVE_ARCHITECTURES}" = *"${POWERSHELL_ARCHIVE_ARCHITECTURES_ALMALINUX}"* ]]; then 
+        install_using_dnf && install_powershell_dnf || use_github="true"
     
+    else 
+       use_github="true"
+    fi
+
     if [ "${use_github}" = "true" ]; then
         echo "Attempting install from GitHub release..."
         install_using_github
@@ -276,10 +385,10 @@ if [ -n "$POWERSHELL_PROFILE_URL" ]; then
     echo "Downloading PowerShell Profile from: $POWERSHELL_PROFILE_URL"
     # Get profile path from currently installed pwsh
     profilePath=$(pwsh -noni -c '$PROFILE.AllUsersAllHosts')
-    sudo -E curl -sSL -o "$profilePath" "$POWERSHELL_PROFILE_URL"
+    -E curl -sSL -o "$profilePath" "$POWERSHELL_PROFILE_URL"
 fi
 
 # Clean up
 rm -rf /var/lib/apt/lists/*
 
-echo "Done!"
+echo "Done!"
\ No newline at end of file
diff --git a/test/powershell/powershell_alma_linux.sh b/test/powershell/powershell_alma_linux.sh
new file mode 100644
index 000000000..8b653afe5
--- /dev/null
+++ b/test/powershell/powershell_alma_linux.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+# Import test library for `check` command
+source dev-container-features-test-lib
+
+# Extension-specific tests
+check "pwsh file is symlink" bash -c "[ -L /usr/bin/pwsh ]"
+check "pwsh symlink is registered as shell" bash -c "[ $(grep -c '/usr/bin/pwsh' /etc/shells) -ge 1 ]"
+check "pwsh target is correct" bash -c "[ $(readlink /usr/bin/pwsh) = /opt/microsoft/powershell/7/pwsh ]"
+check "pwsh owner is root" bash -c "[ $(stat -c %U /opt/microsoft/powershell/7/pwsh) = root ]"
+check "pwsh group is root" bash -c "[ $(stat -c %G /opt/microsoft/powershell/7/pwsh) = root ]"
+check "pwsh file mode is -rwxr-xr-x" bash -c "[ $(stat -c '%A' /opt/microsoft/powershell/7/pwsh) = '-rwxr-xr-x' ]"
+check "pwsh is in PATH" bash -c "command -v pwsh"
+
+# Report result
+reportResults
\ No newline at end of file
diff --git a/test/powershell/scenarios.json b/test/powershell/scenarios.json
index 87a5b9d16..781ebaf86 100644
--- a/test/powershell/scenarios.json
+++ b/test/powershell/scenarios.json
@@ -30,5 +30,11 @@
     "features": {
       "powershell": {}
     }
+  },
+  "powershell_alma_linux": {
+    "image": "almalinux:9",
+    "features": {
+      "powershell": {} 
+    }
   }
 }