diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..3590382
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,6 @@
+sudo: required
+services:
+  - docker
+install: []
+script:
+  - docker build .
diff --git a/Dockerfile b/Dockerfile
index ed63929..47e03ea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,6 +26,7 @@ RUN ./install_git_lfs.sh
 FROM resource as tests
 
 RUN apk add --update \
+    ruby-bigdecimal \
     ruby-bundler \
     ruby-io-console \
     ruby-dev \