diff --git a/tools/releaseBuild/Images/microsoft_powershell_centos7/Dockerfile b/tools/releaseBuild/Images/microsoft_powershell_centos7/Dockerfile
index 10955fbf67b..e816acc4cd3 100644
--- a/tools/releaseBuild/Images/microsoft_powershell_centos7/Dockerfile
+++ b/tools/releaseBuild/Images/microsoft_powershell_centos7/Dockerfile
@@ -1,7 +1,7 @@
 # Docker image file that describes an Centos7 image with PowerShell installed from Microsoft YUM Repo
 
-FROM microsoft/powershell:centos7
-LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>" 
+FROM mcr.microsoft.com/powershell:centos7
+LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>"
 
 # Install dependencies and clean up
 RUN yum install -y \
diff --git a/tools/releaseBuild/Images/microsoft_powershell_ubuntu14.04/Dockerfile b/tools/releaseBuild/Images/microsoft_powershell_ubuntu14.04/Dockerfile
index 7eb7a6d6134..0118af3469f 100644
--- a/tools/releaseBuild/Images/microsoft_powershell_ubuntu14.04/Dockerfile
+++ b/tools/releaseBuild/Images/microsoft_powershell_ubuntu14.04/Dockerfile
@@ -1,7 +1,7 @@
 # Docker image file that describes an Ubuntu14.04 image with PowerShell installed from Microsoft APT Repo
 
-FROM microsoft/powershell:ubuntu14.04
-LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>" 
+FROM mcr.microsoft.com/powershell:ubuntu14.04
+LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>"
 
 # Install dependencies and clean up
 RUN apt-get update \
@@ -27,7 +27,7 @@ RUN apt-get update \
 	dpkg-dev \
 	libfuse-dev \
 	fuse \
-	python \	
+	python \
     && rm -rf /var/lib/apt/lists/*
 
 COPY PowerShellPackage.ps1 /
diff --git a/tools/releaseBuild/Images/microsoft_powershell_ubuntu16.04/Dockerfile b/tools/releaseBuild/Images/microsoft_powershell_ubuntu16.04/Dockerfile
index 7c6779f0a01..dc09d2eb39f 100644
--- a/tools/releaseBuild/Images/microsoft_powershell_ubuntu16.04/Dockerfile
+++ b/tools/releaseBuild/Images/microsoft_powershell_ubuntu16.04/Dockerfile
@@ -1,7 +1,7 @@
 # Docker image file that describes an Ubuntu16.04 image with PowerShell installed from Microsoft APT Repo
 
-FROM microsoft/powershell:ubuntu16.04
-LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>" 
+FROM mcr.microsoft.com/powershell:ubuntu16.04
+LABEL maintainer="PowerShell Team <powershellteam@hotmail.com>"
 
 # Install dependencies and clean up
 RUN apt-get update \
diff --git a/tools/releaseBuild/Images/microsoft_powershell_windowsservercore/DockerFile b/tools/releaseBuild/Images/microsoft_powershell_windowsservercore/DockerFile
index f6ebd133b49..6902ec62e82 100644
--- a/tools/releaseBuild/Images/microsoft_powershell_windowsservercore/DockerFile
+++ b/tools/releaseBuild/Images/microsoft_powershell_windowsservercore/DockerFile
@@ -1,6 +1,6 @@
 # escape=`
 #0.3.6 (no powershell 6)
-FROM microsoft/powershell:windowsservercore
+FROM mcr.microsoft.com/powershell:windowsservercore
 LABEL maintainer='PowerShell Team <powershellteam@hotmail.com>'
 LABEL description="This Dockerfile for Windows Server Core with git installed via chocolatey."
 
@@ -15,7 +15,7 @@ RUN Import-Module ./containerFiles/dockerInstall.psm1; `
 
 # Install WIX
 ADD https://github.com/wixtoolset/wix3/releases/download/wix311rtm/wix311-binaries.zip /wix.zip
-COPY wix.psm1 containerFiles/wix.psm1  
+COPY wix.psm1 containerFiles/wix.psm1
 RUN Import-Module ./containerFiles/wix.psm1; `
     Install-WixZip -zipPath \wix.Zip