diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..bc48452
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,20 @@
+FROM clojure:openjdk-17-lein as build-env
+
+ADD . /app
+WORKDIR /app
+
+RUN lein uberjar
+
+# -----------------------------------------------------------------------------
+
+from openjdk:17
+
+RUN groupadd -r ymlgen && useradd -r -s /bin/false -g ymlgen ymlgen
+RUN mkdir /app
+COPY --from=build-env /app/target/uberjar/ymlgen-*-standalone.jar /app/ymlgen.jar
+
+RUN chown -R ymlgen:ymlgen /app
+
+user ymlgen
+
+ENTRYPOINT ["java", "-jar", "/app/ymlgen.jar"]
diff --git a/README.md b/README.md
index 906d17b..8f564d8 100644
--- a/README.md
+++ b/README.md
@@ -7,13 +7,18 @@ It supports including parts of definitions into other ones, variables, generatin
 The tool leverages the [EDN](https://github.com/edn-format/edn) format and the [Aero](https://github.com/juxt/aero) library.
 
 Why `ymlgen` ? It's simple, powerful and extensible.
+I think neither templating or using YAML to generate more YAML are good solutions to manage Kubernetes resources and that's why I built this tool.
 
 ## Install
 
-For Linux (x86-64), download the `ymlgen` binary and put it in your PATH. This binary is built using [GraalVM](https://www.graalvm.org/) so more targets may be added soon (help welcome).
+For Linux (x86-64), download the `ymlgen` binary from the [release page](https://github.com/mcorbin/ymlgen/releases) and put it in your PATH. This binary is built using [GraalVM](https://www.graalvm.org/), more targets may be added soon (help welcome).
 
 You can alternatively download the `jar` file and then run it with `java -jar ymlgen.jar` (Java 17 needed).
 
+A docker image is also provided. Note that this image uses `java` as well so executing it is a bit slower than the static binary built with GraalVM.
+
+All example described below can be done using the Docker image by executing in the directory containing your templates `docker run -v $(pwd):/data mcorbin/ymlgen:v0.1.0 <command>`. The files will be availables in `/data`.
+
 ## Quick start
 
 ### Simple EDN example
@@ -21,6 +26,7 @@ You can alternatively download the `jar` file and then run it with `java -jar ym
 Once `ymlgen` installed, you are ready to use it. Let's for example generate a yaml file from a simple EDN definition. Put in `pod.edn` this content:
 
 ```clojure
+;; this is a comment
 {:apiVersion "v1"
  :kind "Pod"
  :metadata {:name "dnsutils"
diff --git a/release.sh b/release.sh
index 4066072..8a1aa6c 100755
--- a/release.sh
+++ b/release.sh
@@ -9,8 +9,10 @@ lein test
 git add .
 git commit -m "release ${tag}"
 git tag -a "${tag}" -m "release ${tag}"
-lein uberjar
+docker build -t mcorbin/ymlgen:${tag} .
+docker push mcorbin/ymlgen:${tag}
 
+lein uberjar
 native-image --report-unsupported-elements-at-runtime \
              --initialize-at-build-time \
              --no-server \
diff --git a/src/ymlgen/commands/yaml.clj b/src/ymlgen/commands/yaml.clj
index af7393c..b25a51c 100644
--- a/src/ymlgen/commands/yaml.clj
+++ b/src/ymlgen/commands/yaml.clj
@@ -48,4 +48,5 @@
   (let [result (gen-yaml config)]
     (if output-path
       (spit output-path result)
-      (println result))))
+      (do (print result)
+          (flush)))))