diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..e3c6878
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,13 @@
+# Dockerfile for development on local machine.
+#
+
+FROM starefossen/ruby-node:2-6
+
+WORKDIR /srv
+
+RUN gem install compass --no-document && \
+    gem install tilt --version "1.4.1" --no-document
+
+ADD package.json ./
+RUN npm i
+CMD ["npm", "start"]
diff --git a/README.md b/README.md
index 5d7fe88..01ecc8d 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,29 @@ Please go to this [cleaner new repo](https://github.com/hackfoldr/hackfoldr-2.0-
 
 ## Why?
 We wiped-out all accidentally commited project specific files in the new repo, and decided to keep this repo for those projects.
+
+## Development
+
+To run hackfoldr on local machine, please install `docker` & `docker-compose` first, then run:
+
+```bash
+docker-compose up
+```
+
+This will spin up http://localhost:3000 using the latest code in the current directory.
+
+If you update package.json, you will need to rebuild the base image using:
+
+```bash
+docker-compose up --build
+```
+
+## Build
+
+Build process is part of the dev process above, thus all the files for production build will be in `_public` already.
+
+To just build `_public` without running a server, use the following command:
+
+```bash
+docker-compose run --rm hackfoldr npm run build
+```
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..5132e21
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,18 @@
+version: '2'
+
+volumes:
+  # node_modules in hackfoldr service goes to this named volume
+  # so that local machine's node_modules are not messed up
+  # https://stackoverflow.com/a/38601156
+  node_modules:
+
+services:
+  hackfoldr:
+    build:
+      context: .
+    volumes:
+      - .:/srv
+      # node_modules will use named volume instead of the one under current directory
+      - node_modules:/srv/node_modules
+    ports:
+      - 3000:3000
diff --git a/views/index.jade b/views/index.jade
index ab9fe2b..f286268 100644
--- a/views/index.jade
+++ b/views/index.jade
@@ -142,7 +142,7 @@ block script
     // let user sort #toc menu by drag and drop, a very user friendly feature suggest by @ipa. using jquery ui sortable. (also, ethercalc only)
     var sort_ethercalc = function(sort_initial_row, sort_target_row){
       $.ajax({
-        url: "https://ethercalc.org/_/"+ethercalc_name,
+        url: "https://ethercalc.net/_/"+ethercalc_name,
         contentType: 'text/plain',
         data: 'moveinsert A'+sort_initial_row+':F'+sort_initial_row+' A'+sort_target_row,
         type: 'POST',
@@ -372,7 +372,7 @@ block script
         // set iframe src?
         if(current_iframe_url == "edit"){
           if(csv_api_source_type=="ethercalc"){
-            iframe_src = 'https://ethercalc.org/'+csv_api_source_id;
+            iframe_src = 'https://ethercalc.net/'+csv_api_source_id;
           }else{
             iframe_src = 'https://docs.google.com/spreadsheets/d/'+csv_api_source_id+'/edit';
           };
@@ -730,8 +730,8 @@ block script
     // prepare to post to ethercalc
     var post_ethercalc = function(post_title, post_url){
       $.ajax({
-        url: "https://ethercalc.org/_/"+ethercalc_name,
-        //url: "https://ethercalc.org/_/"+ethercalc_name+"?row="+new_pad_row_index.toString(),
+        url: "https://ethercalc.net/_/"+ethercalc_name,
+        //url: "https://ethercalc.net/_/"+ethercalc_name+"?row="+new_pad_row_index.toString(),
         type: 'POST',
         contentType: 'text/csv',
         processData: false,
@@ -860,7 +860,7 @@ block script
       // show sheet
       if(!hide_sheet){
         if(csv_api_source_type=="ethercalc"){
-          $("#topbar .edit.table").attr("href",'https://ethercalc.org/'+csv_api_source_id);
+          $("#topbar .edit.table").attr("href",'https://ethercalc.net/'+csv_api_source_id);
           // make foldr items sortable
           if(sort_sheet){
             $("#toc .sortable").sortable(sort_action);