How I use locales in Alpine

[yograterol]

We are migrating all docker images to Alpine base, but a software need set locales in the system but locales not found and I don't know how install locales command with this images.

locale -a or locale-gen

[andyshinn]

Unfortunately, the musl libc locale system doesn't appear to be very complete at the moment. There is a little bit of information on it at http://www.openwall.com/lists/musl/2014/08/01/1. But there are no tools in Alpine to generate locales or set up the MUSL_LOCPATH variable. Some reference from Void Linux (also running musl libc) about no locale support at the moment at https://forum.voidlinux.eu/t/x86-64-musl-void-installer-cannot-set-locale/57.

Sorry :(

Referencing #102 as well.

[yograterol]

Well, for this app I will use another distro :(

[ulope]

Is there a reason that this was closed? It seems to me there is still no way to generate locales?

[rilian-la-te]

I wrote some simple tool with many bugs. It contains locale executable and template for generate MUSL locale files; https://github.com/rilian-la-te/musl-locales

[aiphee]

So there is now no easy way to install locale (cs_CZ.utf8) in container? I would need it for my PHP application to print translated dates.

[rilian-la-te]

Install my tool, make a MO file for cs_CZ.utf8 (and make a PR). Name it cs_CZ.utf8 and move to locale dir (configured at CMake).

And use cs_CZ.utf8 as LANG and LC_ALL.

[alextanhongpin]

I encountered the same issue too when using alpine:3.6. The following works for me.

In your Dockerfile:

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---

And this is how the locale.md looks like:

aa_DJ
aa_ER
aa_ET
af_ZA
am_ET
an_ES
ar_AE
ar_BH
ar_DZ
ar_EG
ar_IN
ar_IQ
ar_JO
ar_KW
ar_LB
ar_LY
ar_MA
ar_OM
ar_QA
ar_SA
ar_SD
ar_SY
ar_TN
ar_YE
as_IN
ast_ES
ayc_PE
az_AZ
be_BY
bem_ZM
ber_DZ
ber_MA
bg_BG
bho_IN
bn_BD
bn_IN
bo_CN
bo_IN
br_FR
brx_IN
bs_BA
byn_ER
ca_AD
ca_ES
ca_FR
ca_IT
crh_UA
csb_PL
cs_CZ
cv_RU
cy_GB
da_DK
de_AT
de_BE
de_CH
de_DE
de_LU
doi_IN
dv_MV
dz_BT
el_CY
el_GR
en_AG
en_AU
en_BW
en_CA
en_DK
en_GB
en_HK
en_IE
en_IN
en_NG
en_NZ
en_PH
en_SG
en_US
en_ZA
en_ZM
en_ZW
es_AR
es_BO
es_CL
es_CO
es_CR
es_CU
es_DO
es_EC
es_ES
es_GT
es_HN
es_MX
es_NI
es_PA
es_PE
es_PR
es_PY
es_SV
es_US
es_UY
es_VE
et_EE
eu_ES
fa_IR
ff_SN
fi_FI
fil_PH
fo_FO
fr_BE
fr_CA
fr_CH
fr_FR
fr_LU
fur_IT
fy_DE
fy_NL
ga_IE
gd_GB
gez_ER
gez_ET
gl_ES
gu_IN
gv_GB
ha_NG
he_IL
hi_IN
hne_IN
hr_HR
hsb_DE
ht_HT
hu_HU
hy_AM
ia_FR
id_ID
ig_NG
ik_CA
is_IS
it_CH
it_IT
iu_CA
iw_IL
ja_JP
ka_GE
kk_KZ
kl_GL
km_KH
kn_IN
kok_IN
ko_KR
ks_IN
ku_TR
kw_GB
ky_KG
lb_LU
lg_UG
li_BE
lij_IT
li_NL
lo_LA
lt_LT
lv_LV
mag_IN
mai_IN
mg_MG
mhr_RU
mi_NZ
mk_MK
ml_IN
mni_IN
mn_MN
mr_IN
ms_MY
mt_MT
my_MM
nb_NO
nds_DE
nds_NL
ne_NP
nhn_MX
niu_NU
niu_NZ
nl_AW
nl_BE
nl_NL
nn_NO
no_NO
nr_ZA
nso_ZA
oc_FR
om_ET
om_KE
or_IN
os_RU
pa_IN
pap_AN
pa_PK
pl_PL
ps_AF
pt_BR
pt_PT
ro_RO
ru_RU
ru_UA
rw_RW
sa_IN
sat_IN
sc_IT
sd_IN
se_NO
shs_CA
sid_ET
si_LK
sk_SK
sl_SI
so_DJ
so_ET
so_KE
so_SO
sq_AL
sq_MK
sr_ME
sr_RS
ss_ZA
st_ZA
sv_FI
sv_SE
sw_KE
sw_TZ
szl_PL
ta_IN
ta_LK
te_IN
tg_TJ
th_TH
ti_ER
ti_ET
tig_ER
tk_TM
tl_PH
tn_ZA
tr_CY
tr_TR
ts_ZA
tt_RU
ug_CN
uk_UA
unm_US
ur_IN
ur_PK
uz_UZ
ve_ZA
vi_VN
wa_BE
wae_CH
wal_ET
wo_SN
xh_ZA
yi_US
yo_NG
yue_HK
zh_CN
zh_HK
zh_SG
zh_TW
zu_ZA

The locale.md contains the list of locale I want to install in the alpine image. If you tried setting the LANG=zh_HK.UTF-8 and it doesn't work, it's because the locale is missing from the image.

[nicolasbuch]

I'm having some issues with localisation on alpine and i can see that i'm not the only one.

@alextanhongpin I've tried what you suggested. I can now do locale -a which outputs:

C C.utf8 da_DK.utf8 de_DE.utf8 en_US.utf8 POSIX

But when trying to change the locale (php command setlocale) nothing changes. I have even tried modifying the ENV variable LC_ALL so that locale outputs:

LANG= LC_CTYPE="da_DK.utf8" LC_NUMERIC="da_DK.utf8" LC_TIME="da_DK.utf8" LC_COLLATE="da_DK.utf8" LC_MONETARY="da_DK.utf8" LC_MESSAGES="da_DK.utf8" LC_PAPER="da_DK.utf8" LC_NAME="da_DK.utf8" LC_ADDRESS="da_DK.utf8" LC_TELEPHONE="da_DK.utf8" LC_MEASUREMENT="da_DK.utf8" LC_IDENTIFICATION="da_DK.utf8" LC_ALL=da_DK.utf8

(here i tried changing it to following; da_DK.utf8, da_DK, da_DK.utf-8, da_DK.UTF-8, da_DK.UTF8 with no luck)

Can anybody help? Is it even possible to make it work?

[rilian-la-te]

You try to using glibc locales in musl app, it is strange. Do you tried my workaround?

[nicolasbuch]

@rilian-la-te Yes i tried. Don't have cmake installed on my server. Tried on my mac as a proof of concept which resulted in some missing libraries which lead to a dead end. Might give it another try

[rilian-la-te]

Sorry, I do not know autotools. You need to have argp and libintl to build it in Alpine. I can switch to meson, if python is more acceptable.

[nicolasbuch]

Hi @rilian-la-te. I'm back at this problem. I successfully installed your tool but how do i generate the locale?

Install my tool, make a MO file for cs_CZ.utf8 (and make a PR). Name it cs_CZ.utf8 and move to locale dir (configured at CMake). And use cs_CZ.utf8 as LANG and LC_ALL.

How do i make a MO file for e.g. da_DK.utf8 and what is PR? Can you give a few hints :D?

[rilian-la-te]

PR is pull request. For making a MO file you need a PO file and gettext. PO file is a text file with MUSL localization. And you can use my musl-locales to get a locale program and auto install of PO (it will automatically makes it MO and install in right place and sets requiered environment variable)

[nicolasbuch]

PR is pull request.

lol 🤣. Okay makes sense. I ran your musl-locales and got this output:

Install the project... -- Install configuration: "" -- Installing: /usr/local/etc/profile.d/00locale.sh -- Installing: /usr/local/bin/locale -- Installing: /usr/local/share/locale/ch_DE/LC_MESSAGES/musl-locales.mo -- Installing: /usr/local/share/locale/de_CH/LC_MESSAGES/musl-locales.mo -- Installing: /usr/local/share/locale/en_US/LC_MESSAGES/musl-locales.mo -- Installing: /usr/local/share/locale/ru_RU/LC_MESSAGES/musl-locales.mo -- Installing: /usr/local/share/i18n/locales/musl/ch_DE.UTF-8 -- Installing: /usr/local/share/i18n/locales/musl/de_CH.UTF-8 -- Installing: /usr/local/share/i18n/locales/musl/en_US.UTF-8 -- Installing: /usr/local/share/i18n/locales/musl/ru_RU.UTF-8

This means that the following languages were installed: ch_DE.UTF-8, de_CH.UTF-8,en_US.UTF-8, ru_RU.UTF-8. Right?

When i try to setlocale to one of these locales, it does not work.

If i do /usr/local/bin/locale -a (to list all enabled locales) it only outputs: C C.UTF-8

I have tried setting the MUSL_LOCPATH env variable as the musl documentation states http://www.openwall.com/lists/musl/2014/08/01/1 with no luck...

Any ideas to what i'm doing wrong?

[rilian-la-te]

show me MUSL_LOCPATH

[nicolasbuch]

show me MUSL_LOCPATH

usr/local/share/locale/

[rilian-la-te]

It should be /usr/local/share/i18n/locales/musl

[rilian-la-te]

set it so and try again And you should really install 00locale.sh in correct location to get locales after reboot

[nicolasbuch]

It should be /usr/local/share/i18n/locales/musl

Tried setting it to /usr/local/share/i18n/locales/musl. Still no luck.

/usr/local/bin/locale -a also still outputs C C.UTF-8

Might just be an impossible task at this moment :(

[rilian-la-te]

It should work. Try to export it forcefully and then run locale -a

[nicolasbuch]

It should work. Try to export it forcefully and then run locale -a

The environmental variable, MUSL_LOCPATH? I know it is set correctly. If i echo $MUSL_LOCPATH it outputs /usr/local/share/i18n/locales/musl.

Documentation also states;

In programs running with elevated privileges (setuid/setgid/etc.), the MUSL_LOCPATH environment variable is not honored. At present, this means there is no way to use the locale functionality with such programs. This deficiency will be addressed in a future release.

I'm running in docker. Doesn't that always run with elevated privileges?

[rilian-la-te]

I do not know, I test my programs in VirtualBox alpine installation.

[edwardoliveira]

We have been trying to work around the absence of locale support in Alpine for two months now. There is not really any way of installing support for other languages?

[nicolasbuch]

Unfortunately it does not seem like it at the moment. I spend days researching every way possible without any positive outcome.

Ended up solving it with a custom package (our problem was PHP localization which relies on system locales to work) which overrides the system locales.

I don’t know if you can do something like that , but I would try to look for workarounds until alpine supports locales

[cypressious]

https://github.com/dotnet/dotnet-docker/blob/master/samples/dotnetapp/Dockerfile.alpine-x64-globalization contains a workaround. Basically RUN apk update && apk add --no-cache icu-libs. This works for a .NET application, not sure if it's enough for other runtimes.

[iget-master]

Just an update for @alextanhongpin solution:

As said on the alpine-pkg-glibc package repo, the public signature address changed, so the updated script is:

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://alpine-pkgs.sgerrand.com/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---

[bentcoder]

Is it safe to ignore error below or is there a solution to it? Thanks for the code though.

# cat docker/php/locale.md  | xargs -i /usr/glibc-compat/bin/localedef -i {} -f UTF-8 {}.UTF-8

cannot open locale definition file `iw_IL': No such file or directory
cannot open locale definition file `no_NO': No such file or directory
cannot open locale definition file `pap_AN': No such file or directory

[pl77]

Is it safe to ignore error below or is there a solution to it?

Just delete those three identifiers from the locale.md file if it concerns you. Likely they were deprecated or reassigned to different identifiers.

[Auswaschbar]

Based on the musl-locales tool by @rilian-la-te, I created a simple example image showing how to use musl locales with docker-alpine. It creates a single docker layer weighting around 150 kb, while containing a few example locales. They mostly aren't full-blown localizations, but at least allow you to use localized time and date functions.

You can find it here: https://github.com/Auswaschbar/alpine-localized-docker

[nicolasbuch]

Based on the musl-locales tool by @rilian-la-te, I created a simple example image showing how to use musl locales with docker-alpine. It creates a single docker layer weighting around 150 kb, while containing a few example locales. They mostly aren't full-blown localizations, but at least allow you to use localized time and date functions.

You can find it here: https://github.com/Auswaschbar/alpine-localized-docker

This is awesome, thanks!

I can see that locale -a only outputs

C.UTF-8
en_US.UTF-8
ch_DE.UTF-8
de_DE.UTF-8
ru_RU.UTF-8
de_CH.UTF-8
en_GB.UTF-8
fr_FR.UTF-8

What would it take to add more languages? Do we just need to push new .PO files to the https://gitlab.com/rilian-la-te/musl-locales repo?

[rilian-la-te]

Yes, just push it to me) And if you see untranslated strings, you just need to modify .pot file (it is handmade, not generated).

[Herz3h]

Here is how I managed to install locales on alpine 3.9 (probably works on earlier versions too)

[curunoir]

Here is how I managed to install locales on alpine 3.9 (probably works on earlier versions too)

Hi I used this gist ton install it on php:7.2.19-fpm-alpine3.9 image.

Locales seem to be installed if I use usr/glibc-compat/bin/locale -a but they can't be used within php, strftime still returns english words even with setting setlocale() with another locale.

[Herz3h]

@curunoir You're right, locales are installed, but php doesn't use them either. I'm trying to investigate why, will post back if I find anything.

I also tested: LC_ALL=fr_FR.UTF-8 date on the command line and it outputs english date. Problem is not php I guess.

EDIT: The gist I posted above does not seem to work. So I used rilian-la-te's solution above (has only following locales tho: ch_DE de_DE en_US fr_FR ru_RU, more can be added with a PR look above posts for more info).

Basically the steps are:

ENV MUSL_LOCPATH=/usr/local/share/i18n/locales/musl
RUN apk add --update git cmake make musl-dev gcc gettext-dev libintl
RUN cd /tmp && git clone https://gitlab.com/rilian-la-te/musl-locales.git
RUN cd /tmp/musl-locales && cmake . && make && make install

then using

/usr/local/bin/locale -a

To check for presence of the locales.

And to be sure it works, you can type: LANG=fr_FR.UTF-8 date

Edit: Replaced github link with gitlab instead which is more up to date.

[ktb83]

@Herz3h I've been putting together an APKBUILD file for rilian-la-te's solution.

Although the locales appear to work with the date command in a terminal, have you been able to figure out why they do not work in PHP with setlocale?

ktb:~$ date +%A
Wednesday
ktb:~$ date +%B
November
ktb:~$ LANG=es_ES.UTF-8 date +%A
miercoles
ktb:~$ LANG=es_ES.UTF-8 date +%B
noviembre
ktb:~$ LC_ALL=es_ES.UTF-8 date +%A
miercoles
ktb:~$ LC_ALL=es_ES.UTF-8 date +%B
noviembre

<?php
setlocale(LC_ALL, 'es_ES.UTF-8');
echo 'setlocale(LC_ALL, 0): ' . setlocale(LC_ALL, 0) . '<br>';

echo 'strftime("%A"): ' . strftime('%A') . '<br>';
echo 'strftime("%B"): ' . strftime('%B') . '<br><br>';
?>

Output:

setlocale(LC_ALL, 0): es_ES.UTF-8
strftime("%A"): Wednesday
strftime("%B"): November

[rsanzante]

From https://github.com/gliderlabs/docker-alpine/issues/144#issuecomment-505356435

Basically the steps are:

ENV MUSL_LOCPATH=/usr/local/share/i18n/locales/musl
RUN apk add --update git cmake make musl-dev gcc gettext-dev libintl
RUN cd /tmp && git clone https://github.com/rilian-la-te/musl-locales.git
RUN cd /tmp/musl-locales && cmake . && make && make install

While this is not wrong, I suggest to clone project from GitLab instead of Github, because it seems more updated there. For example, Gitlab repository has es_ES support.

So use:

ENV MUSL_LOCPATH=/usr/local/share/i18n/locales/musl
RUN apk add --update git cmake make musl-dev gcc gettext-dev libintl
RUN cd /tmp && git clone https://gitlab.com/rilian-la-te/musl-locales.git
RUN cd /tmp/musl-locales && cmake . && make && make install

Edit: Linked comment was updated and now points to GitLab, so don't get confused if you see there the GitLab URL :)

[ktb83]

You're also welcome to use this APKBUILD file to build packages locally. I hope to eventually have it included in Alpine's package repositories.

# Maintainer: KTB <ktb83dev@gmail.com>
pkgname=musl-locales
pkgver=8633379e
pkgrel=0
arch="all"
url="https://gitlab.com/rilian-la-te/musl-locales"
pkgdesc="Locales support for musl"
license="MIT AND LGPL-3.0-only"
makedepends="cmake make musl-dev gcc gettext-dev libintl"
subpackages="$pkgname-lang $pkgname-doc"
source="https://gitlab.com/rilian-la-te/$pkgname/-/archive/$pkgver/$pkgname-$pkgver.tar.gz"
options="!check" # no test suite/unit tests

build() {
    cmake . -DCMAKE_INSTALL_PREFIX=/usr
    make
}

package() {
    DESTDIR="$pkgdir" make install
    install -Dm644 LICENSE "$pkgdir"/usr/share/licenses/$pkgname/LICENSE
    install -Dm644 LICENSE.MIT "$pkgdir"/usr/share/licenses/$pkgname/LICENSE.MIT
}

sha512sums="a58db2e598b8e0edd960332b912d3c87d0e542f1e82958e826f74a68ab6d8d2fca4c7c75d4eb6745da867e882ff8395d6cb69226937bcfed9d1be3c36a2c416f  musl-locales-8633379e.tar.gz"

[ktb83]

It looks like the IntlDateFormatter class from the PHP Intl extension can be used on Alpine which relies on ICU:

echo IntlDateFormatter::formatObject(
    new DateTime(), // DateTime object
    "eeee MMMM dd, yyyy '@' hh:mm:ss",  // ICU Date format
    'en_US'  // Locale
) . '<br>';

echo IntlDateFormatter::formatObject(
    new DateTime(), // DateTime object
    "eeee MMMM dd, yyyy '@' hh:mm:ss",  // ICU Date format
    'fr_FR'  // Locale
) . '<br>';

echo IntlDateFormatter::formatObject(
    new DateTime(), // DateTime object
    "eeee MMMM dd, yyyy '@' hh:mm:ss",  // ICU Date format
    'es_ES'  // Locale
) . '<br>';

Output:

Sunday November 17, 2019 @ 11:58:48
dimanche novembre 17, 2019 @ 11:58:48
domingo noviembre 17, 2019 @ 11:58:48

I just installed apache2 php7 php7-apache2 php7-intl and enabled the Intl extension in php.ini.

[edoeel]

@curunoir You're right, locales are installed, but php doesn't use them either. I'm trying to investigate why, will post back if I find anything.

I also tested: LC_ALL=fr_FR.UTF-8 date on the command line and it outputs english date. Problem is not php I guess.

Hi @Herz3h, do you have any update about your investigation?

[Herz3h]

@edoardomistretta the steps I posted above (with musl) are the ones I currently use and it's working just fine.

[btd1337]

This is my Postgres-Alpine locale:

This is my Postgres db settings:

Why my monetary values aren't in pt_BR format?

The amounts should be as: R$ 100,00

What remains to be done for this to work?

[hoshsadiq]

For anyone else stumbling upon this, musl-libc doesn't support LC_MONETARY yet. It is on their roadmap with no target date.

[Renrhaf]

Works with https://github.com/gliderlabs/docker-alpine/issues/144#issuecomment-505356435. Thanks @Herz3h, @rilian-la-te, @Auswaschbar <3

[williamdes]

Source: https://stackoverflow.com/a/63602822/5155484 This works fine:

apk --no-cache add \
    musl-locales \
    musl-locales-lang

[FedericoHeichou]

I suggest this one for PHP

ENV MUSL_LOCPATH="/usr/share/i18n/locales/musl"
RUN apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/v3.13/community musl-locales musl-locales-lang \
    && cd "$MUSL_LOCPATH" \
    && for i in *.UTF-8; do cp -a "$i" "${i%%.UTF-8}"; done

It permits to run setlocale(LC_TIME, 'it_IT'); without .UTF-8 too

[QGB]

# apk add --no-cache locales locales-all
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  locales (missing):
    required by: world[locales]
  locales-all (missing):
    required by: world[locales-all]

[williamdes]

# apk add --no-cache locales locales-all
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  locales (missing):
    required by: world[locales]
  locales-all (missing):
    required by: world[locales-all]

https://grrr.tech/posts/2020/add-locales-to-alpine-linux-docker-image/ https://gist.github.com/alextanhongpin/aa55c082a47b9a1b0060a12d85ae7923

[FaimMedia]

Installing the icu-data-full package in Alpine (v3.17+) seems to do the trick to get it working with PHP:

FROM php:8.1-cli-alpine

ENV LC_ALL nl_NL.UTF-8
ENV LANG nl_NL.UTF-8

RUN apk update && apk add libintl icu icu-dev icu-data-full musl-locales musl-locales-lang

RUN docker-php-ext-install -j$(nproc) intl pcntl

RUN locale -a

RUN date

RUN cat /etc/os-release

RUN php -r "echo \\Locale::getDefault() . PHP_EOL;";
RUN php -r "echo (new \\IntlDateFormatter('nl_NL.UTF-8', IntlDateFormatter::FULL, IntlDateFormatter::FULL, 'Europe/Amsterdam'))->format(new \\DateTime()) . PHP_EOL;"

RUN php -r "print_r(\\ResourceBundle::getLocales(''));"

Last command gives me a list of 800+ locales.

[feeh27]

Installing the icu-data-full package in Alpine (v3.17+) seems to do the trick to get it working with PHP:

FROM php:8.1-cli-alpine

ENV LC_ALL nl_NL.UTF-8
ENV LANG nl_NL.UTF-8

RUN apk update && apk add libintl icu icu-dev icu-data-full musl-locales musl-locales-lang

RUN docker-php-ext-install -j$(nproc) intl pcntl

RUN locale -a

RUN date

RUN cat /etc/os-release

RUN php -r "echo \\Locale::getDefault() . PHP_EOL;";
RUN php -r "echo (new \\IntlDateFormatter('nl_NL.UTF-8', IntlDateFormatter::FULL, IntlDateFormatter::FULL, 'Europe/Amsterdam'))->format(new \\DateTime()) . PHP_EOL;"

RUN php -r "print_r(\\ResourceBundle::getLocales(''));"

Last command gives me a list of 800+ locales.

Thanks @FaimMedia this works for me.

[marqu3s]

This is my Postgres-Alpine locale:

None of the solutions I found worked for me. Do you have a working solution for alpine:latest docker image that works for php?