add an init process, refactor the entrypoint

Dockerfile

@@ -1,6 +1,8 @@
 FROM node:18-alpine as dev
 LABEL author="Paolo Pustorino <[email protected]>"
 
+RUN apk add --no-cache tini
+
 # Variables
 ENV INSTALL_DIR=/opt/raneto
 ENV PORT=80
@@ -23,9 +25,20 @@ EXPOSE $PORT
 # Configure the entrypoint script
 COPY build/node/entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
-CMD ["npm run start"]
-ENTRYPOINT ["/entrypoint.sh"]
+CMD ["npm", "run", "start"]
+ENTRYPOINT ["tini", "--", "/entrypoint.sh"]
 
 FROM dev as prod
+
 WORKDIR /opt/raneto
-RUN cd custom && npm install
+# Production build, must be all moved in a shared script.
+RUN cd themes/spark-playbook && \
+    npm install && \
+    npm run build && \
+    cd /opt/raneto && \
+    npm install && \
+    npm run postinstall
+
+# This should be moved before instaoll, but for some reasons it breaks the build.
+# We just use it now for the entrypoint.
+ENV NODE_ENV=production

build/node/entrypoint.sh

@@ -3,8 +3,8 @@
 set -eo pipefail
 BASE=${PWD}
 
-if [ "${1}" = 'npm' ]; then
-echo "Installing and building theme..."
+if [ "${1}" = 'npm' ] && [ "$NODE_ENV" != 'production' ]; then
+  echo "Installing and building theme..."
   cd /opt/raneto/themes/spark-playbook
   npm install
   npm run build