Add example usage of new env var in docker-compose.yml

pica-etherpad/docker-compose.yml

@@ -15,6 +15,9 @@ services:
           - "traefik.frontend.rule=Host:pad.picasoft.net"
           - "traefik.port=8080"
           - "traefik.enable=true"
+        environment:
+          - ETHERPAD_THEME=colibris
+          - ETHERPAD_MINIFY=true
         restart: always
 
     etherpad-db:

pica-etherpad/entrypoint.sh

@@ -62,7 +62,7 @@ cat <<- EOF > /opt/etherpad-lite/settings.json
 		    "database": "${ETHERPAD_DB_NAME}",
 		    "charset" : "utf8mb4"
 		  },
-  "minify": "${ETHERPAD_MINIFY}",
+  "minify": ${ETHERPAD_MINIFY},
   "skinName": "${ETHERPAD_THEME}",
   "defaultPadText": "${ETHERPAD_DEFAULT_TEXT}",
 EOF