executor failed running /bin/sh -c docker-php-ext-install - php

Question

I am trying upgrade this docker file from 7.3 to 7.4 but getting executor failed error.
Detailed error:
executor failed running [/bin/sh -c docker-php-ext-install bcmath
ctype dom gd hash iconv intl mbstring
mysqli opcache pdo_mysql simplexml sockets soap
sodium xsl zip ;]: exit code: 2
FROM php:7.4-fpm as base
ENV COMPOSER_HOME=/tmp/composer
ENV APCU_VERSION=5.1.18
RUN apt-get update && apt-get install -y --no-install-recommends gnupg \
netcat \
sudo \
libicu-dev \
libfreetype6-dev \
libjpeg-dev \
libpng-dev \
libsodium-dev \
libxml2-dev \
libxslt-dev \
libzip-dev \
rsync \
unzip \
git \
openssh-client \
;
RUN pecl install apcu-${APCU_VERSION}
RUN docker-php-ext-configure gd --with-freetype=/usr/include/ --with-jpeg=/usr/include/
RUN docker-php-ext-install \
bcmath \
ctype \
dom \
gd \
hash \
iconv \
intl \
mbstring \
mysqli \
opcache \
pdo_mysql \
simplexml \
sockets \
soap \
sodium \
xsl \
zip \
;
RUN docker-php-ext-enable apcu
RUN echo "memory_limit=1G" >> /usr/local/etc/php/conf.d/zz-memory-limit-php.ini
RUN echo "apc.enable=1" >> /usr/local/etc/php/conf.d/zz-apcu.ini
RUN echo "apc.enable_cli=1" >> /usr/local/etc/php/conf.d/zz-apcu.ini
RUN echo "opcache.memory_consumption=512MB" >> /usr/local/etc/php/conf.d/zz-opcache.conf
RUN echo "opcache.max_accelerated_files=60000" >> /usr/local/etc/php/conf.d/zz-opcache.conf
RUN echo "opcache.consistency_checks=0" >> /usr/local/etc/php/conf.d/zz-opcache.conf
RUN echo "opcache.validate_timestamps=0" >> /usr/local/etc/php/conf.d/zz-opcache.conf
RUN echo "opcache.enable_cli=1" >> /usr/local/etc/php/conf.d/zz-opcache.conf
FROM base as build
RUN curl https://files.magerun.net/n98-magerun2.phar -o /usr/local/bin/magerun \
&& chmod 755 /usr/local/bin/magerun
RUN mkdir -p -m 0775 ~/.ssh && ssh-keyscan github.com >> ~/.ssh/known_hosts
RUN mkdir -p -m 0775 ~/.ssh && ssh-keyscan github.com >> /var/www/.ssh
# USER www-data
WORKDIR /var/www/html
ARG COMPOSER_AUTH
COPY --from=composer:1 /usr/bin/composer /usr/bin/composer
RUN composer global require hirak/prestissimo
COPY auth.json auth.json
COPY composer.json composer.json
COPY composer.lock composer.lock
RUN --mount=type=ssh,id=id_rsa php -d memory_limit=2G $(which composer) install --no-progress --no-dev
COPY app/etc/config.php app/etc/config.php
COPY bin bin
FROM build as app
ENV MAGE_MODE=production
RUN php -d memory_limit=2G bin/magento setup:di:compile
RUN composer dump-autoload --optimize --apcu
RUN php -d memory_limit=2G bin/magento setup:static-content:deploy -f
RUN rm -rf /var/www/html/var/cache
RUN rm -rf /var/www/html/var/page_cache
RUN rm -rf /var/www/html/var/session
COPY --chown=www-data app/etc/env.docker.php app/etc/env.php

Answer 1

i had a similar issue today.
Seems that in php7.4 iconv his a native library.
So you should try to remove it from your Dockerfile and see if it works.
Even if it's an 6 month old issue, i hope it could help someone.
Chears.