work in progress

Dockerfile

-FROM node:slim 
-ARG ETHERPAD_VERSION=1.7.5
+FROM node:alpine 
 ARG NODE_ENV=production
-RUN echo "Getting version: ${ETHERPAD_VERSION}" && \
-	curl \
-		--location \
-		--fail \
-		--silent \
-		--show-error \
-		--output /opt/etherpad-lite.tar.gz \
-		https://github.com/ether/etherpad-lite/archive/"${ETHERPAD_VERSION}".tar.gz && \
-	mkdir /opt/etherpad-lite && \
-	tar xf /opt/etherpad-lite.tar.gz \
-		--directory /opt/etherpad-lite \
-		--strip-components=1 && \
-	rm /opt/etherpad-lite.tar.gz
-RUN /opt/etherpad-lite/bin/installDeps.sh
-COPY settings.json /opt/etherpad-lite/settings.json
-EXPOSE 9001
-WORKDIR /opt/etherpad-lite/
-CMD ["node", "node_modules/ep_etherpad-lite/node/server.js"]
+RUN mkdir /app && apk update && apk add curl gettext
+COPY ./1.7.0.tar.gz /app
+WORKDIR /app
+RUN tar zxvf 1.7.0.tar.gz --strip 1 -C /app && \
+  rm /app/1.7.0.tar.gz
+RUN /app/bin/installDeps.sh
+COPY ./settings.json.tmpl /app/settings.json.tmpl
+COPY ./docker-entrypoint.sh /docker-entrypoint.sh
+EXPOSE 80
+CMD [ "/docker-entrypoint.sh" ]

docker-entrypoint.sh

+#!/bin/sh
+
+set -e
+REPLACE_VARS='DB_PASSWORD'
+
+# check if needed vars are present
+if [ -z "$DB_PASSWORD" ] ; then
+    echo "Error: The following environment variables MUST be defined."
+    echo " - DB_PASSWORD: database password"
+    exit 1
+fi
+
+# generate setup files
+envsubst "$(printf '${%s} ' $REPLACE_VARS)" < /app/settings.json.tmpl > /app/settings.json
+
+node node_modules/ep_etherpad-lite/node/server.js
+

settings.json → settings.json.tmpl

@@ -8,42 +8,18 @@
 
   //IP and port which etherpad should bind at
   "ip": "0.0.0.0",
-  "port" : 9001,
+  "port" : 80,
 
   // Option to hide/show the settings.json in admin page, default option is set to true
   "showSettingsInAdminPage" : true,
 
-  /*
-  // Node native SSL support
-  // this is disabled by default
-  //
-  // make sure to have the minimum and correct file access permissions set
-  // so that the Etherpad server can access them
-
-  "ssl" : {
-            "key"  : "/path-to-your/epl-server.key",
-            "cert" : "/path-to-your/epl-server.crt",
-            "ca": ["/path-to-your/epl-intermediate-cert1.crt", "/path-to-your/epl-intermediate-cert2.crt"]
-          },
-
-  */
-
-  //The Type of the database. You can choose between dirty, postgres, sqlite and mysql
-  //You shouldn't use "dirty" for for anything else than testing or development
-/*  "dbType" : "dirty",
-  //the database specific settings
-  "dbSettings" : {
-                   "filename" : "var/dirty.db"
-                 },
-		 */
-
-  // An Example of MySQL Configuration
+  // MySQL Configuration
    "dbType" : "mysql",
    "dbSettings" : {
-      "user"    : "etherpadv3",
+      "user"    : "etherpad",
       "host"    : "db",
-      "password": "toortoor",
-      "database": "etherpadv3",
+      "password": "${DB_PASSWORD}",
+      "database": "etherpad",
       "charset" : "utf8mb4"
    },
 
@@ -113,21 +89,6 @@
   /* Privacy: disable IP logging */
   "disableIPlogging" : false,
 
-  /* Users for basic authentication. is_admin = true gives access to /admin.
-     If you do not uncomment this, /admin will not be available! */
-  /*
-  "users": {
-    "admin": {
-      "password": "changeme1",
-      "is_admin": true
-    },
-    "user": {
-      "password": "changeme1",
-      "is_admin": false
-    }
-  },
-  */
-
   // restrict socket.io transport methods
   "socketTransportProtocols" : ["xhr-polling", "jsonp-polling", "htmlfile"],
 
@@ -166,40 +127,9 @@
   // You can add as many appenders as you want here:
   "logconfig" :
     { "appenders": [
-        { "type": "console"
-        //, "category": "access"// only logs pad access
+        {
+          "type": "console"
         }
-    /*
-      , { "type": "file"
-      , "filename": "your-log-file-here.log"
-      , "maxLogSize": 1024
-      , "backups": 3 // how many log files there're gonna be at max
-      //, "category": "test" // only log a specific category
-        }*/
-    /*
-      , { "type": "logLevelFilter"
-        , "level": "warn" // filters out all log messages that have a lower level than "error"
-        , "appender":
-          {  Use whatever appender you want here  }
-        }*/
-    /*
-      , { "type": "logLevelFilter"
-        , "level": "error" // filters out all log messages that have a lower level than "error"
-        , "appender":
-          { "type": "smtp"
-          , "subject": "An error occurred in your EPL instance!"
-          , "recipients": "bar@blurdybloop.com, baz@blurdybloop.com"
-          , "sendInterval": 300 // 60 * 5 = 5 minutes -- will buffer log messages; set to 0 to send a mail for every message
-          , "transport": "SMTP", "SMTP": { // see https://github.com/andris9/Nodemailer#possible-transport-methods
-              "host": "smtp.example.com", "port": 465,
-              "secureConnection": true,
-              "auth": {
-                  "user": "foo@example.com",
-                  "pass": "bar_foo"
-              }
-            }
-          }
-        }*/
       ]
     }
 }