mailcatcher

mailcatcher/Dockerfile

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+FROM debian:wheezy
+MAINTAINER Johannes Schickling "schickling.j@gmail.com"
+
+# install ruby 1.9.1
+RUN apt-get update && apt-get install -y ruby ruby-dev build-essential
+
+# install mailcatcher
+RUN gem install mailcatcher --no-ri --no-rdoc
+
+# cleanup package manager
+RUN apt-get remove --purge -y build-essential ruby-dev && apt-get autoclean && apt-get clean
+RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# smtp port
+EXPOSE 1025
+
+# webserver port
+EXPOSE 1080
+
+CMD ["mailcatcher", "-f", "--ip=0.0.0.0"]

mailcatcher/README.md

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+# mailcatcher
+
+## Usage
+
+```sh
+$ docker run -d -p 1080:1080 --name mailcatcher schickling/mailcatcher
+```
+
+Link the container to another container and use the mailcatcher SMTP port `1025` via a ENV variable like `$MAILCATCHER_PORT_1025_TCP_ADDR`.