Merge pull request #17018 from KatrinaAS/patch-1

docs: Move Post install link to infobox

_includes/root-errors.md

@@ -0,0 +1,8 @@
+> **Tip**
+> 
+> Receiving errors when trying to run without root?
+>
+> The `docker` user group exists but contains no users, which is why you’re required 
+> to use `sudo` to run Docker commands. Continue to [Linux postinstall](/engine/install/linux-postinstall) 
+> to allow non-privileged users to run Docker commands and for other optional configuration steps.
+{: .tip}

engine/install/centos.md

@@ -168,7 +168,9 @@ $ sudo yum-config-manager \
     This command downloads a test image and runs it in a container. When the
     container runs, it prints a confirmation message and exits.
 
-You have now successfully installed and started Docker Engine. The docker user group exists but contains no users, which is why you’re required to use sudo to run Docker commands. Continue to [Linux postinstall](linux-postinstall.md) to allow non-privileged users to run Docker commands and for other optional configuration steps.
+You have now successfully installed and started Docker Engine. 
+
+{% include root-errors.md %}
 
 #### Upgrade Docker Engine
 

engine/install/debian.md

@@ -173,11 +173,9 @@ Raspbian.
    This command downloads a test image and runs it in a container. When the
    container runs, it prints a confirmation message and exits.
 
-You have now successfully installed and started Docker Engine. The `docker` user
-group exists but contains no users, which is why you're required to use `sudo`
-to run Docker commands. Continue to [Linux post-install](linux-postinstall.md)
-to allow non-privileged users to run Docker commands and for other optional
-configuration steps.
+You have now successfully installed and started Docker Engine. 
+
+{% include root-errors.md %}
 
 #### Upgrade Docker Engine
 

engine/install/fedora.md

@@ -191,10 +191,9 @@ a new file each time you want to upgrade Docker Engine.
     This command downloads a test image and runs it in a container. When the
     container runs, it prints a message and exits.
 
-This installs and runs Docker Engine. Use `sudo` to run Docker commands.
-Continue to [Post-installation steps for Linux](linux-postinstall.md) to allow
-non-privileged users to run Docker commands and for other optional configuration
-steps.
+This installs and runs Docker Engine.
+
+{% include root-errors.md %}
 
 #### Upgrade Docker Engine
 

engine/install/rhel.md

@@ -155,10 +155,9 @@ $ sudo yum-config-manager \
     This command downloads a test image and runs it in a container. When the
     container runs, it prints a message and exits.
 
-This installs and runs Docker Engine. Use `sudo` to run Docker
-commands. Continue to [Linux postinstall](linux-postinstall.md) to allow
-non-privileged users to run Docker commands and for other optional configuration
-steps.
+This installs and runs Docker Engine. 
+
+{% include root-errors.md %}
 
 #### Upgrade Docker Engine
 

engine/install/sles.md

@@ -173,10 +173,9 @@ $ sudo zypper addrepo {{ download-url-base }}/docker-ce.repo
     This command downloads a test image and runs it in a container. When the
     container runs, it prints a message and exits.
 
-This installs and runs Docker Engine. Use `sudo` to run Docker
-commands. Continue to [Linux postinstall](linux-postinstall.md) to allow
-non-privileged users to run Docker commands and for other optional configuration
-steps.
+This installs and runs Docker Engine.
+
+{% include root-errors.md %}
 
 #### Upgrade Docker Engine
 

engine/install/ubuntu.md

@@ -169,11 +169,13 @@ Docker from the repository.
    This command downloads a test image and runs it in a container. When the
    container runs, it prints a confirmation message and exits.
 
-You have now successfully installed and started Docker Engine. The `docker` user
-group exists but contains no users, which is why you're required to use `sudo`
-to run Docker commands. Continue to [Linux post-install](linux-postinstall.md)
-to allow non-privileged users to run Docker commands and for other optional
-configuration steps.
+You have now successfully installed and started Docker Engine.
+
+> Receiving errors when trying to run without root?
+>
+> The `docker` user group exists but contains no users, which is why you're required 
+> to use `sudo` to run Docker commands. Continue to [Linux post-install](linux-postinstall.md)
+> to allow non-privileged users to run Docker commands and for other optional configuration steps.
 
 #### Upgrade Docker Engine