diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 000000000..a85b5fb6b
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,36 @@
+# Version control
+.git
+.gitignore
+
+# Confidential information
+config/database.yml
+config/secrets.yml
+config/deploy-secrets.yml
+config/maintenance.yml
+
+# Logfiles and tempfiles.
+**/log/*
+!**/log/.keep
+**/tmp/
+
+# Files attached by users
+public/system/
+public/ckeditor_assets/
+storage/
+
+# Files generated by scripts or compiled
+public/sitemap.xml
+public/assets/
+public/machine_learning/data/
+
+# Bundler config, cache and gemsets
+**/.bundle/
+**/.ruby-gemset
+
+# Files used in local development
+**/.byebug_history
+**/.DS_Store
+
+# Test results
+spec/examples.txt
+coverage/