diff --git a/SPEC.md b/SPEC.md
index 291ddb2..e95387d 100644
--- a/SPEC.md
+++ b/SPEC.md
@@ -313,7 +313,7 @@ easily portable between systems, regardless of the programming language they are
 implemented in. We recommend Engine implementors use a `Dockerfile` to automate
 the builds of these images. The `Dockerfile` must follow these specifications:
 
-* The images must specify a `MAINTAINER`.
+* The image must specify a `maintainer` `LABEL`:
 * The `/code` must be declared as a `VOLUME`.
 * The `WORKDIR` must be specified as `/code`
 * A non-root user named `app` must be created with UID and GID 9000 and declared
@@ -325,21 +325,25 @@ the builds of these images. The `Dockerfile` must follow these specifications:
 Here is an example of a `Dockerfile` that follows the specifications for an engine written in Node.js:
 
 ```
-FROM node
+FROM node:7.7-alpine
 
-MAINTAINER Michael R. Bernstein
+LABEL maintainer "Your Name <hello@example.com>"
 
-RUN useradd -u 9000 -r -s /bin/false app
+WORKDIR /usr/src/app
+COPY package.json /usr/src/app/
 
-RUN npm install glob
+RUN npm install
 
-WORKDIR /code
+RUN adduser -u 9000 -D app
 COPY . /usr/src/app
+RUN chown -R app:app /usr/src/app
 
 USER app
+
 VOLUME /code
+WORKDIR /code
 
-CMD ["/usr/src/app/bin/fixme"]
+CMD ["/usr/src/app/bin/your-engine"]
 ```
 
 ## Naming convention
diff --git a/VERSION b/VERSION
index 0d91a54..9e11b32 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.0
+0.3.1