Optimize Dockerfile.
This optimizes the Dockerfile by; - Combining RUN statements so that files are removed in the same layer as they are added. - Removing the downloaded .tar.gz of the docker-gen binary after expanding - Adding `--no-install-recommends` (but explicitly installing ca-certificates) - Replacing `ADD` with `COPY` (recommended if no unpacking is required) Also added a `.dockerignore` file to prevent the `.git` directory and README.md being added to the image. These changes reduce the size of the image with 34 MB (was 268.4 MB, now 233.9 MB), and results in less layers being produced. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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2 changed files with 25 additions and 17 deletions
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.dockerignore
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.dockerignore
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@ -0,0 +1,2 @@
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.git
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README.md
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40
Dockerfile
40
Dockerfile
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@ -2,28 +2,34 @@ FROM ubuntu:14.04
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MAINTAINER Jason Wilder jwilder@litl.com
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MAINTAINER Jason Wilder jwilder@litl.com
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# Install Nginx.
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# Install Nginx.
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RUN echo "deb http://ppa.launchpad.net/nginx/stable/ubuntu trusty main" > /etc/apt/sources.list.d/nginx-stable-trusty.list
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RUN echo "deb http://ppa.launchpad.net/nginx/stable/ubuntu trusty main" > /etc/apt/sources.list.d/nginx-stable-trusty.list \
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RUN echo "deb-src http://ppa.launchpad.net/nginx/stable/ubuntu trusty main" >> /etc/apt/sources.list.d/nginx-stable-trusty.list
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&& echo "deb-src http://ppa.launchpad.net/nginx/stable/ubuntu trusty main" >> /etc/apt/sources.list.d/nginx-stable-trusty.list \
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RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C300EE8C
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&& apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C300EE8C \
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RUN apt-get update
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&& apt-get update \
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RUN apt-get install --only-upgrade bash
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&& apt-get install -y -q --no-install-recommends \
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RUN apt-get install -y wget nginx
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ca-certificates \
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nginx \
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wget \
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&& apt-get clean \
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&& rm -r /var/lib/apt/lists/*
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RUN echo "daemon off;" >> /etc/nginx/nginx.conf
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# Configure Nginx and apply fix for long server names
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RUN echo "daemon off;" >> /etc/nginx/nginx.conf \
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&& sed -i 's/# server_names_hash_bucket/server_names_hash_bucket/g' /etc/nginx/nginx.conf
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#fix for long server names
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# Install Forego
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RUN sed -i 's/# server_names_hash_bucket/server_names_hash_bucket/g' /etc/nginx/nginx.conf
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RUN wget -P /usr/local/bin https://godist.herokuapp.com/projects/ddollar/forego/releases/current/linux-amd64/forego \
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&& chmod u+x /usr/local/bin/forego
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RUN wget -P /usr/local/bin https://godist.herokuapp.com/projects/ddollar/forego/releases/current/linux-amd64/forego
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RUN chmod u+x /usr/local/bin/forego
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ENV DOCKER_GEN_VERSION 0.3.4
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ENV DOCKER_GEN_VERSION 0.3.4
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RUN wget https://github.com/jwilder/docker-gen/releases/download/$DOCKER_GEN_VERSION/docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz
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RUN tar -C /usr/local/bin -xvzf docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz
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RUN mkdir /app
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RUN wget https://github.com/jwilder/docker-gen/releases/download/$DOCKER_GEN_VERSION/docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz \
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WORKDIR /app
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&& tar -C /usr/local/bin -xvzf docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz \
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ADD . /app
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&& rm /docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz
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COPY . /app/
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WORKDIR /app/
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EXPOSE 80
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EXPOSE 80
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ENV DOCKER_HOST unix:///tmp/docker.sock
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ENV DOCKER_HOST unix:///tmp/docker.sock
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