我有一个如下所示的docker文件。 launch.sh
是此Docker映像中的入口点。
FROM ubuntu:16.04
USER root
RUN apt-get update && apt-get install -y \
curl \
vim \
net-tools \
git \
iputils-ping \
wget
RUN apt-get install -y python
RUN apt-get update && apt-get install -y gcc g++ make libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev libzstd-dev
RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
ENV NVM_DIR /root/.nvm
RUN . $NVM_DIR/nvm.sh && \
nvm install 7.9.0 && npm install -g npm@5.6.0
ADD ./Docker/launch.sh /workspace/
CMD ["/bin/sh", "/workspace/launch.sh"]
launch.sh
的内容是:
#!/bin/bash
cd /workspace/demo
npm install
node index.js
当我运行docker容器:docker run IMAGE_NAME
时,出现此错误:
npm: not found
node: not found
此图像中的node
由已安装的nvm
管理,并且其脚本已在/root/.bashrc
文件上设置。但是我不知道为什么找不到nodejs命令。但是,如果我通过docker run -it IMAGE_NAME bash
运行容器,然后手动运行workspace/launch.sh
命令,则一切正常。似乎在运行映像时未执行~/.bashrc
。如何让容器源.bashrc?
/root/.bashrc
的内容是:
# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples
# If not running interactively, don't do anything
[ -z "$PS1" ] && return
# don't put duplicate lines in the history. See bash(1) for more options
# ... or force ignoredups and ignorespace
HISTCONTROL=ignoredups:ignorespace
# append to the history file, don't overwrite it
shopt -s histappend
# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=1000
HISTFILESIZE=2000
# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize
# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
debian_chroot=$(cat /etc/debian_chroot)
fi
# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
xterm-color) color_prompt=yes;;
esac
# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes
if [ -n "$force_color_prompt" ]; then
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
# We have color support; assume it's compliant with Ecma-48
# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
# a case would tend to support setf rather than setaf.)
color_prompt=yes
else
color_prompt=
fi
fi
if [ "$color_prompt" = yes ]; then
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt
# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
;;
*)
;;
esac
# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
alias ls='ls --color=auto'
#alias dir='dir --color=auto'
#alias vdir='vdir --color=auto'
alias grep='grep --color=auto'
alias fgrep='fgrep --color=auto'
alias egrep='egrep --color=auto'
fi
# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'
# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
#if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
# . /etc/bash_completion
#fi
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion" # This loads nvm bash_completion
答案 0 :(得分:1)
您可以在source /path/to/bashrc
中添加launch.sh
并将CMD
更改为以下内容,而不是通过CMD
本身更改为bash:
CMD ["/workspace/launch.sh"]
或者,您可以在Dockerfile中执行以下操作,而不是依赖于bashrc
ENV NVM_DIR /root/.nvm
ENV NODE_VERSION 7.9.0
ENV NODE_PATH $NVM_DIR/v$NODE_VERSION/lib/node_modules #Ensure that this is the actual path
ENV PATH $NVM_DIR/versions/node/v$NODE_VERSION/bin:$PATH
RUN . $NVM_DIR/nvm.sh && \
nvm install $NODE_VERSION && npm install -g npm@5.6.0
答案 1 :(得分:0)
每个命令都运行一个单独的子外壳,因此不会保留环境变量,也不会获取.bashrc
(请参阅this answer)。
您必须在运行命令的同一过程中手动手动获取脚本,这样就可以了:
CMD source /root/.bashrc && /workspace/launch.sh
只要您的launch.sh
是可执行文件。
根据您使用的documentation exec
格式,不会调用命令外壳,因此它不适用于您的.bashrc
。
BASH不是您的默认外壳,所以
CMD /bin/bash -c "source /root/.bashrc && /workspace/launch.sh"
是运行脚本所必需的。
如果您想默认将shell设置为BASH,则可以使用in documentation中所述的SHELL
指令,例如:
SHELL ["/bin/bash", "-c"]
答案 2 :(得分:0)
CMD /bin/bash -i "/workspace/launch.sh"
我相信 -i 标志按预期方式工作,.bashrc 文件按预期使用,其他解决方案对我不起作用,从未使用过 .bashrc 文件
解决方案可能并不适合所有人,带有 -i 标志的程序可能会提示用户交互
ps:我使用了 docker create 和 docker start -i "container name"