On my NodeJS server (running as docker image)...
Dockerfile
FROM node:4.8-slim
RUN apt-get update -y && \
apt-get install -yqq locales git
...there is no english locale installed:
RUN locale -a
gives me
C
C.UTF-8
POSIX
In my dockerfile I try to add the missing language
RUN apt-get install -y language-pack-en
But this gives me
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package language-pack-en
So how can I add the missing language pack?
Update
Using
sudo locale-gen en_US
sudo locale-gen en_US.UTF-8
sudo update-locale
gives me this error:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US:en",
LC_ALL = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_COLLATE to
default locale: No such file or directory
If it's a debian image, you can add the following in your Dockerfile
RUN apt-get install -y locales locales-all
ENV LC_ALL en_US.UTF-8
ENV LANG en_US.UTF-8
ENV LANGUAGE en_US.UTF-8