当我尝试构建Docker映像时，出现以下错误：
sudo docker build -t app .
Sending build context to Docker daemon 256.6MB
Step 1/14 : FROM r-base:3.5.0
---> 190658892827
Step 2/14 : RUN apt-get update && apt-get install -y sudo gdebi-core pandoc pandoc-citeproc libcurl4-gnutls-dev libcairo2-dev/unstable libudunits2-dev libxml2-dev libxt-dev libv8-dev libgdal-dev libssl-dev
---> Running in 9c11250f034c
Err:1 http://deb.debian.org/debian testing InRelease
Temporary failure resolving 'deb.debian.org'
Err:2 http://http.debian.net/debian sid InRelease
Temporary failure resolving 'http.debian.net'
Reading package lists...
W: Failed to fetch http://deb.debian.org/debian/dists/testing/InRelease Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://http.debian.net/debian/dists/sid/InRelease Temporary failure resolving 'http.debian.net'
W: Some index files failed to download. They have been ignored, or old ones used instead.
Reading package lists...
E: The value 'testing' is invalid for APT::Default-Release as such a release is not available in the sources
The command '/bin/sh -c apt-get update && apt-get install -y sudo gdebi-core pandoc pandoc-citeproc libcurl4-gnutls-dev libcairo2-dev/unstable libudunits2-dev libxml2-dev libxt-dev libv8-dev libgdal-dev libssl-dev' returned a non-zero code: 100
在我的 Docker文件中，我有以下几行-
FROM r-base:3.5.0
RUN apt-get update && apt-get install -y \
sudo \
gdebi-core \
pandoc \
pandoc-citeproc \
libcurl4-gnutls-dev \
libcairo2-dev/unstable \
libudunits2-dev \
libxml2-dev \
libxt-dev \
libv8-dev \
libgdal-dev \
libssl-dev
任何解决此问题的想法都会很有帮助。
谢谢