fix(dockerfile.liquid): fixed an issue where copy after we chown

Fixed an issue as we where copying after we chown a directory resulting in permission errors

Fix #80

templates/Dockerfile.liquid

@@ -15,10 +15,10 @@ RUN npm config set network-timeout 600000 -g && npm install
 {%- endif %}
 
 WORKDIR /opt/app
+COPY . .
 ENV PATH /opt/node_modules/.bin:$PATH
 RUN chown -R strapi:strapi /opt/app
 USER strapi
-COPY . .
 {%- if packageManager == "yarn" %}
 RUN ["yarn", "build"]
 {%- else %}