diff --git a/Dockerfile b/Dockerfile
index 6132c62..5eb36ea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,16 +8,16 @@ RUN GOBIN=/mi/bin go install ./cmd/...
 
 FROM xena/elm:0.19.1 AS elm
 RUN apk --no-cache add nodejs npm \
- && npm install -g elm-spa
+ && npm install -g elm-spa \
+ && npm install -g uglify-js
 WORKDIR /mi
 COPY ./frontend .
-RUN elm-spa build . \
- && elm make --output main.js src/Main.elm --optimize
+RUN sh build.sh
 
 FROM xena/alpine
 COPY --from=go /mi/bin /usr/local/bin
 COPY ./run /run
 COPY --from=go /mi/static /mi/static
-COPY --from=elm /mi/main.js /mi/static/main.js
+COPY --from=elm /mi/main.min.js /mi/static/main.js
 WORKDIR /mi
 CMD ["/bin/sh", "/run/start.sh"]
diff --git a/frontend/.gitignore b/frontend/.gitignore
index 8bc31ae..5e85c4a 100644
--- a/frontend/.gitignore
+++ b/frontend/.gitignore
@@ -1,2 +1,3 @@
 elm-stuff
 node_modules
+*.js
diff --git a/frontend/build.sh b/frontend/build.sh
new file mode 100644
index 0000000..9f34e19
--- /dev/null
+++ b/frontend/build.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+elm-spa build .
+elm make --output main.js src/Main.elm --optimize
+
+uglifyjs main.js --compress 'pure_funcs="F2,F3,F4,F5,F6,F7,F8,F9,A2,A3,A4,A5,A6,A7,A8,A9",pure_getters,keep_fargs=false,unsafe_comps,unsafe' | uglifyjs --mangle --output=main.min.js