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Cleaning Up Dockerfile Layers Per Official Docs

From the official docs: 

```
Note: The official Debian and Ubuntu images automatically run apt-get clean, so explicit invocation is not required.
```

Also added ` && rm -rf /var/lib/apt/lists/*` as part of the install line which probably does what was intended (no need to make a new layer). 

Added apt-get update to the RUN payload, as it should be part of the same layer. 

Both are documented here: https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices/
This commit is contained in:
Ryan MacLean 2017-04-30 15:04:00 -07:00 committed by GitHub
parent 26b51383b2
commit 7ce94eb468

View file

@ -1,8 +1,7 @@
FROM debian:jessie FROM debian:jessie
MAINTAINER Erik Dasque <erik@frenchguys.com> MAINTAINER Erik Dasque <erik@frenchguys.com>
RUN apt-get update RUN apt-get update && apt-get install --no-install-recommends -y build-essential \
RUN apt-get install --no-install-recommends -y build-essential \
gcc \ gcc \
unzip \ unzip \
wget \ wget \
@ -15,10 +14,8 @@ RUN apt-get install --no-install-recommends -y build-essential \
gcc-arm-none-eabi \ gcc-arm-none-eabi \
binutils-arm-none-eabi \ binutils-arm-none-eabi \
libnewlib-arm-none-eabi \ libnewlib-arm-none-eabi \
git git \
&& rm -rf /var/lib/apt/lists/*
RUN apt-get clean
RUN rm -rf /var/lib/apt/lists/*
ENV keyboard=ergodox ENV keyboard=ergodox
ENV subproject=ez ENV subproject=ez