engine: resources: Add nodocker build tag

Make it easy to disable building docker which is enormous.

docs/documentation.md

@@ -351,18 +351,28 @@ GOTAGS=novirt make build
 
 #### Disable augeas support
 
-If you wish to compile mgmt without augeas support, you can use the following command:
+If you wish to compile mgmt without augeas support, you can use the following
+command:
 
 ```
 GOTAGS=noaugeas make build
 ```
 
+#### Disable docker support
+
+If you wish to compile mgmt without docker support, you can use the following
+command:
+
+```
+GOTAGS=nodocker make build
+```
+
 #### Combining compile-time flags
 
 You can combine multiple tags by using a space-separated list:
 
 ```
-GOTAGS="noaugeas novirt" make build
+GOTAGS="noaugeas novirt nodocker" make build
 ```
 
 ## Examples

docs/quick-start-guide.md

@@ -119,8 +119,11 @@ To build `mgmt` without augeas support please run:
 To build `mgmt` without libvirt support please run:
 `GOTAGS='novirt' make build`
 
-To build `mgmt` without augeas or libvirt support please run:
+To build `mgmt` without docker support please run:
-`GOTAGS='noaugeas novirt' make build`
+`GOTAGS='nodocker' make build`
+
+To build `mgmt` without augeas, libvirt or docker support please run:
+`GOTAGS='noaugeas novirt nodocker' make build`
 
 ## Binary Package Installation
 

engine/resources/docker_container.go

@@ -15,6 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+// +build !nodocker
+
 package resources
 
 import (

engine/resources/docker_container_test.go

@@ -15,6 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+// +build !nodocker
+
 package resources
 
 import (