diff --git a/Dockerfile b/Dockerfile
index 93ad9c9..5762248 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
 FROM nginx:1.19.0-alpine
 
-RUN apk update && apk add bash git python3 make tzdata && rm -rf /var/cache/apk/* 
-RUN python3 -m pip install requests mistune pygments toml
+RUN apk update && apk add bash git python3 make tzdata curl && rm -rf /var/cache/apk/* 
+#RUN python3 -m pip install requests mistune pygments toml
+RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python -
 COPY docker/nginx.conf /etc/nginx/nginx.conf
 
 # install locales
diff --git a/docker/docker-init.sh b/docker/docker-init.sh
index b0905d7..b47c085 100644
--- a/docker/docker-init.sh
+++ b/docker/docker-init.sh
@@ -5,6 +5,7 @@ cd /
 rm -rf /blog
 git clone https://github.com/kianby/blog.git
 cd /blog
+poetry install
 make
 
 # nginx serve
diff --git a/makesite.py b/makesite.py
index aa95a1c..38f005b 100755
--- a/makesite.py
+++ b/makesite.py
@@ -53,7 +53,7 @@ locale.setlocale(locale.LC_ALL, "")
 # initialize markdown
 
 
-class HighlightRenderer(mistune.HTMLRenderer):
+class HighlightRenderer(mistune.Renderer):
     options = {"escape": False, "hard_wrap": True}
 
     def block_code(self, code, lang=None):