iconv 不适用于 Docker FPM Alpine

Question

那是我的 dockerfile 设置。当我使用 Laravel Dompdf 时，错误将显示“iconv()：错误的字符集，不允许从 utf-8' to us-ascii//TRANSLIT 转换”

我已经检查了 PHP ini，iconv 已启用。在我的docker文件中还添加了iconv安装命令。它仍然不起作用。我的 docker 设置有什么解决方案吗？

FROM php:7.3.33-fpm-alpine

# Fix: iconv(): Wrong charset, conversion from UTF-8 to UTF-8//IGNORE is not allowed in Command line code on line 1
RUN apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/community/ --allow-untrusted gnu-libiconv
ENV LD_PRELOAD /usr/lib/preloadable_libiconv.so php

# Install php extensions
RUN apk update \
    && apk add --no-cache libzip-dev libmcrypt libmcrypt-dev zlib-dev \
    && docker-php-ext-install exif zip bcmath mysqli pdo pdo_mysql ctype json

# Install GD extensions
RUN apk add --no-cache freetype libpng libjpeg-turbo freetype-dev libpng-dev libjpeg-turbo-dev && \
    docker-php-ext-configure gd \
    --with-gd \
    --with-freetype-dir=/usr/include/ \
    --with-png-dir=/usr/include/ \
    --with-jpeg-dir=/usr/include/ && \
    NPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) && \
    docker-php-ext-install -j${NPROC} gd && \
    apk del --no-cache freetype-dev libpng-dev libjpeg-turbo-dev

# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/bin --filename=composer

RUN apk --no-cache update \
    && apk --no-cache add make bash g++ zlib-dev libpng-dev \
    && rm -fr /var/cache/apk/*

# Install npm for Laravel Mix
RUN apk add npm
RUN apk add nodejs-lts --update
RUN npm install -g npm

WORKDIR /application

EXPOSE 9000

# Start services
CMD ["php-fpm"]

Answer 1

RUN apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/v3.12/community/ --allow-untrusted gnu-libiconv=1.15-r2

这对我有用