Create Dockerfile

Dockerfile

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+# use latest stable node
+FROM node:lts-alpine
+
+# set build arguments
+ARG VERSION=1.0.0
+
+# set environment variables for container
+ENV BASE_URL=https://www.kill-the-newsletter.com \
+    EMAIL_DOMAIN=kill-the-newsletter.com \
+    ISSUE_REPORT=mailto:kill-the-newsletter@leafac.com
+
+WORKDIR /src
+
+RUN apk --no-cache add git
+
+# download release and unpack archive
+RUN wget -q -O release.tar.gz https://github.com/leafac/www.kill-the-newsletter.com/archive/$VERSION.tar.gz \
+	&& tar -C . -xzf release.tar.gz \
+	&& rm release.tar.gz \
+	&& mv www.kill-the-newsletter.com-$VERSION/* . \
+	&& rm -rf www.kill-the-newsletter.com-$VERSION/
+
+# install dependencies
+RUN npm install \
+    && npm audit fix
+
+VOLUME /static/feeds/
+
+# expose http & smtp
+EXPOSE 8000 \
+       25
+
+# start application
+CMD [ "npm", "start" ]