diff --git a/semaphore/Containerfile b/semaphore/Containerfile
new file mode 100644
index 0000000..87969c1
--- /dev/null
+++ b/semaphore/Containerfile
@@ -0,0 +1,15 @@
+FROM reg.zknt.org/zknt/node:18
+
+ENV VERSION 1.0.0
+
+RUN set -xe;\
+  curl -LO https://github.com/NickColley/semaphore/archive/refs/tags/${VERSION}.tar.gz &&\
+  mkdir /app &&\
+  tar --strip-components=1 -C /app -xvzf ${VERSION}.tar.gz &&\
+  cd /app &&\
+  yarn --production --pure-lockfile &&\
+  yarn build
+
+EXPOSE 8080
+WORKDIR /app
+ENTRYPOINT PORT=8080 node server.js