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Forked from alextanhongpin/instructions.md
Created May 6, 2019 07:09
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Setting up locale on alpine:3.6 docker image

Locale

When using the alpine docker image, the command locale -a or locale-gen does not exist. You might need them to install different locales in your docker image to allow your applications to support multilingual. Most common issue is when dealing with database inputs (MySQL), whereby the text will be displayed as garbage characters if you do not have the right locale installed.

FROM alpine:3.6

# ---not shown here---

# Install language pack
RUN apk --no-cache add ca-certificates wget && \
    wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://raw.githubusercontent.com/sgerrand/alpine-pkg-glibc/master/sgerrand.rsa.pub && \
    wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-2.25-r0.apk && \
    wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-bin-2.25-r0.apk && \
    wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-i18n-2.25-r0.apk && \
    apk add glibc-bin-2.25-r0.apk glibc-i18n-2.25-r0.apk glibc-2.25-r0.apk

# Iterate through all locale and install it
# Note that locale -a is not available in alpine linux, use `/usr/glibc-compat/bin/locale -a` instead
COPY ./locale.md /locale.md
RUN cat locale.md | xargs -i /usr/glibc-compat/bin/localedef -i {} -f UTF-8 {}.UTF-8

# Set the lang, you can also specify it as as environment variable through docker-compose.yml
ENV LANG=en_US.UTF-8 \
    LANGUAGE=en_US.UTF-8

# --- not show here---

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