fix: 🐛 ensure asciidoc docker image to 1.1.0

Author: rcmoutinho

README.asc

@@ -23,10 +23,10 @@ docker-compose run --rm ebook
 .Utilizando Docker
 ----
 # linux / unix
-docker run --rm -v $(pwd):/documents/ asciidoctor/docker-asciidoctor scripts/docker-startup.sh
+docker run --rm -v $(pwd):/documents/ asciidoctor/docker-asciidoctor:1.1.0 scripts/docker-startup.sh
 
 # others (substituir <caminho> pelo diretório completo deste projeto)
-docker run --rm -v <caminho>:/documents/ asciidoctor/docker-asciidoctor scripts/docker-startup.sh
+docker run --rm -v <caminho>:/documents/ asciidoctor/docker-asciidoctor:1.1.0 scripts/docker-startup.sh
 ----
 
 == Referências

docker-compose.yml

@@ -1,8 +1,8 @@
-version: '3'
+version: "3"
 
 services:
   ebook:
-    image: asciidoctor/docker-asciidoctor
+    image: asciidoctor/docker-asciidoctor:1.1.0
     volumes:
       - .:/documents/
     entrypoint: scripts/docker-startup.sh