apt-get clean & Co must be specified on each apt-get update/install run,
otherwise you will not see any reduction. Once files are stored in a layer you
will not get it away afterwards, somehow like git ;)
RUN apt-get update && \
apt-get install -y locales && \
sed -i -e "s/# $LOCALE.*/$LOCALE UTF-8/" /etc/locale.gen && \
dpkg-reconfigure --frontend=noninteractive locales && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN apt-get update && \
apt-get -y install gawk ... lsb-release && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
This way you will save ~35MB...
> -----Ursprüngliche Nachricht-----
> Von: Jan Kiszka [mailto:jan.kis...@siemens.com]
> Gesendet: Montag, 19. Juni 2017 18:37
> An: Wagner, Daniel (CT RDA ITP SES-DE)
> Cc: kas-devel@googlegroups.com; Yuecel, Mustafa (RC-CH MO MM R&D 5 2)
> Betreff: [PATCH] Docker: Remove libsdl and xterm
>
> From: Jan Kiszka <jan.kis...@siemens.com>
>
> These packages date back from the (pre-public) times when the list was also
> used
> for developer host setups.
>
> Suggested-by: Mustafa Yuecel <mustafa.yue...@siemens.com>
> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
> ---
>
> Applies on top of the Debian switch, I didn't try Ubuntu anymore.
>
> Installed size reduction: ~130 MB
> The (offlist) suggested apt-get clean & Co. didn't provide reductions.
> Seems like something is doing this automatically.
>
> Dockerfile | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/Dockerfile b/Dockerfile
> index c0153d3..43454b4 100644
> --- a/Dockerfile
> +++ b/Dockerfile
> @@ -10,9 +10,9 @@ RUN apt-get update && apt-get install -y locales && \ RUN
> apt-get -y install gawk wget git-core diffstat unzip \
> texinfo gcc-multilib build-essential \
> chrpath socat cpio python python3 \
> - libsdl1.2-dev xterm tar bzip2 curl \
> - dosfstools mtools parted syslinux tree \
> - python3-pip bc python3-yaml lsb-release
> + tar bzip2 curl dosfstools mtools parted \
> + syslinux tree python3-pip bc python3-yaml \
> + lsb-release
> RUN wget -nv -O /usr/bin/gosu
> "https://github.com/tianon/gosu/releases/download/1.10/gosu-amd64"; && \
> chmod +x /usr/bin/gosu
> COPY . /kas
> --
> 2.12.3
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