mirror of https://github.com/docker/docs.git
Remove some trailing whitespace.
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@ -30,7 +30,7 @@ build succeeds:
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``docker build -t shykes/myapp .``
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``docker build -t shykes/myapp .``
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Docker will run your steps one-by-one, committing the result if necessary,
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Docker will run your steps one-by-one, committing the result if necessary,
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before finally outputting the ID of your new image.
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before finally outputting the ID of your new image.
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2. Format
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2. Format
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@ -43,7 +43,7 @@ The Dockerfile format is quite simple:
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# Comment
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# Comment
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INSTRUCTION arguments
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INSTRUCTION arguments
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The Instruction is not case-sensitive, however convention is for them to be
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The Instruction is not case-sensitive, however convention is for them to be
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UPPERCASE in order to distinguish them from arguments more easily.
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UPPERCASE in order to distinguish them from arguments more easily.
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Docker evaluates the instructions in a Dockerfile in order. **The first
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Docker evaluates the instructions in a Dockerfile in order. **The first
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@ -106,7 +106,7 @@ The ``CMD`` instruction sets the command to be executed when running
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the image. This is functionally equivalent to running ``docker commit
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the image. This is functionally equivalent to running ``docker commit
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-run '{"Cmd": <command>}'`` outside the builder.
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-run '{"Cmd": <command>}'`` outside the builder.
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.. note::
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.. note::
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Don't confuse `RUN` with `CMD`. `RUN` actually runs a
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Don't confuse `RUN` with `CMD`. `RUN` actually runs a
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command and commits the result; `CMD` does not execute anything at
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command and commits the result; `CMD` does not execute anything at
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build time, but specifies the intended command for the image.
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build time, but specifies the intended command for the image.
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@ -131,7 +131,7 @@ value ``<value>``. This value will be passed to all future ``RUN``
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instructions. This is functionally equivalent to prefixing the command
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instructions. This is functionally equivalent to prefixing the command
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with ``<key>=<value>``
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with ``<key>=<value>``
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.. note::
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.. note::
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The environment variables will persist when a container is run
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The environment variables will persist when a container is run
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from the resulting image.
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from the resulting image.
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@ -158,10 +158,10 @@ The copy obeys the following rules:
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(identity, gzip, bzip2 or xz), it is unpacked as a directory.
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(identity, gzip, bzip2 or xz), it is unpacked as a directory.
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When a directory is copied or unpacked, it has the same behavior as
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When a directory is copied or unpacked, it has the same behavior as
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``tar -x``: the result is the union of
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``tar -x``: the result is the union of
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1. whatever existed at the destination path and
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1. whatever existed at the destination path and
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2. the contents of the source tree,
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2. the contents of the source tree,
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with conflicts resolved in favor of 2) on a file-by-file basis.
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with conflicts resolved in favor of 2) on a file-by-file basis.
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@ -203,14 +203,14 @@ container created from the image.
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# Nginx
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# Nginx
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#
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#
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# VERSION 0.0.1
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# VERSION 0.0.1
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FROM ubuntu
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FROM ubuntu
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MAINTAINER Guillaume J. Charmes "guillaume@dotcloud.com"
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MAINTAINER Guillaume J. Charmes "guillaume@dotcloud.com"
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# make sure the package repository is up to date
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# make sure the package repository is up to date
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RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
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RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
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RUN apt-get update
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RUN apt-get update
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RUN apt-get install -y inotify-tools nginx apache2 openssh-server
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RUN apt-get install -y inotify-tools nginx apache2 openssh-server
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.. code-block:: bash
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.. code-block:: bash
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@ -218,12 +218,12 @@ container created from the image.
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# Firefox over VNC
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# Firefox over VNC
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#
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#
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# VERSION 0.3
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# VERSION 0.3
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FROM ubuntu
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FROM ubuntu
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# make sure the package repository is up to date
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# make sure the package repository is up to date
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RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
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RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
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RUN apt-get update
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RUN apt-get update
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# Install vnc, xvfb in order to create a 'fake' display and firefox
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# Install vnc, xvfb in order to create a 'fake' display and firefox
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RUN apt-get install -y x11vnc xvfb firefox
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RUN apt-get install -y x11vnc xvfb firefox
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RUN mkdir /.vnc
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RUN mkdir /.vnc
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@ -231,7 +231,7 @@ container created from the image.
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RUN x11vnc -storepasswd 1234 ~/.vnc/passwd
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RUN x11vnc -storepasswd 1234 ~/.vnc/passwd
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# Autostart firefox (might not be the best way, but it does the trick)
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# Autostart firefox (might not be the best way, but it does the trick)
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RUN bash -c 'echo "firefox" >> /.bashrc'
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RUN bash -c 'echo "firefox" >> /.bashrc'
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EXPOSE 5900
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EXPOSE 5900
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CMD ["x11vnc", "-forever", "-usepw", "-create"]
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CMD ["x11vnc", "-forever", "-usepw", "-create"]
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