diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..d49cfe0
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+sudo: required
+services:
+  - docker
+
+env:
+  - JAVA_VERSION=openjdk-8
+
+script:
+  - docker build -t fiji-$JAVA_VERSION fiji-$JAVA_VERSION
+  - docker run --rm -v fiji-$JAVA_VERSION/macro.ijm:/opt/macro.ijm fiji-$JAVA_VERSION -macro /opt/macro.ijm test
diff --git a/fiji-openjdk-8/Dockerfile b/fiji-openjdk-8/Dockerfile
index 9ac837c..de13f11 100644
--- a/fiji-openjdk-8/Dockerfile
+++ b/fiji-openjdk-8/Dockerfile
@@ -8,12 +8,8 @@ FROM openjdk:8
 # Define maintainer.
 LABEL maintainer="https://gitter.im/fiji/fiji"
 
-# Create a user.
-RUN useradd -u 1000 -ms /bin/bash fiji
-USER fiji
-
 # Define working directory.
-WORKDIR /home/fiji
+WORKDIR /opt/fiji
 
 # Install Fiji.
 RUN wget -q https://downloads.imagej.net/fiji/latest/fiji-nojre.zip \
@@ -24,9 +20,5 @@ RUN wget -q https://downloads.imagej.net/fiji/latest/fiji-nojre.zip \
 ENV PATH $PATH:/home/fiji/Fiji.app
 
 # Define entrypoint.
-COPY entrypoint.sh /home/fiji
+COPY entrypoint.sh /opt/fiji
 ENTRYPOINT ["./entrypoint.sh"]
-
-# Run once to create Java preferences.
-COPY demo.py /home/fiji/
-RUN ./entrypoint.sh --headless --ij2 --console --run ./demo.py 'name="test"'
diff --git a/fiji-openjdk-8/demo.py b/fiji-openjdk-8/macro.ijm
similarity index 100%
rename from fiji-openjdk-8/demo.py
rename to fiji-openjdk-8/macro.ijm