Update sample

Author: Quentin Perez

overlay/root/Dockerfile.sample

@@ -1,10 +1,10 @@
-FROM scaleway/ubuntu:amd64-vivid
+FROM scaleway/ubuntu:amd64-wily
 # following 'FROM' lines are used dynamically thanks do the image-builder
 # which dynamically update the Dockerfile if needed.
-#FROM scaleway/ubuntu:armhf-vivid       # arch=armv7l
-#FROM scaleway/ubuntu:arm64-vivid       # arch=arm64
-#FROM scaleway/ubuntu:i386-vivid        # arch=i386
-#FROM scaleway/ubuntu:mips-vivid        # arch=mips
+#FROM scaleway/ubuntu:armhf-wily       # arch=armv7l
+#FROM scaleway/ubuntu:arm64-wily       # arch=arm64
+#FROM scaleway/ubuntu:i386-wily        # arch=i386
+#FROM scaleway/ubuntu:mips-wily        # arch=mips
 
 # Prepare rootfs
 RUN /usr/local/sbin/scw-builder-enter

overlay/root/Makefile.sample

@@ -1,8 +1,8 @@
-NAME =                  APP_NAME
+NAME =                  my-image
 VERSION =               latest
 VERSION_ALIASES =       1.2.3 1.2 1
-TITLE =                 APP_TITLE
-DESCRIPTION =           APP_DESCRIPTION
+TITLE =                 My image
+DESCRIPTION =           My image with Ubuntu and MySQL
 DOC_URL =
 SOURCE_URL =            https://github.com/scaleway-community/...
 VENDOR_URL =
@@ -11,7 +11,7 @@ DEFAULT_IMAGE_ARCH =	x86_64
 
 IMAGE_VOLUME_SIZE =     50G
 IMAGE_BOOTSCRIPT =      stable
-IMAGE_NAME =            APP_IMAGE_NAME
+IMAGE_NAME =            My image
 
 ## Image tools  (https://github.com/scaleway/image-tools)
 all:	docker-rules.mk