Update to 6.0.0 (GA)

Author: tianon

6-rc/alpine/Dockerfile renamed to 6/alpine/Dockerfile

@@ -47,7 +47,7 @@ RUN set -eux; \
 ENV GHOST_INSTALL /var/lib/ghost
 ENV GHOST_CONTENT /var/lib/ghost/content
 
-ENV GHOST_VERSION 6.0.0-rc.3
+ENV GHOST_VERSION 6.0.0
 
 RUN set -eux; \
 	mkdir -p "$GHOST_INSTALL"; \

6-rc/alpine/docker-entrypoint.sh renamed to 6/alpine/docker-entrypoint.sh

@@ -43,7 +43,7 @@ RUN set -eux; \
 ENV GHOST_INSTALL /var/lib/ghost
 ENV GHOST_CONTENT /var/lib/ghost/content
 
-ENV GHOST_VERSION 6.0.0-rc.3
+ENV GHOST_VERSION 6.0.0
 
 RUN set -eux; \
 	mkdir -p "$GHOST_INSTALL"; \

6-rc/debian/Dockerfile renamed to 6/debian/Dockerfile

@@ -2,7 +2,7 @@
 set -eu
 
 declare -A aliases=(
-	[5]='latest'
+	[6]='latest'
 )
 defaultVariant='debian'