Docker composer build error: ERROR: unable to select packages - docker

Question

When I run docker composer build or docker compose build --no-cache I get below error.
First I thought it was a network problem. But I tested the container does have internet access by placing a ping command in the docker file, which successfully receives a ping response.
What is the issue, and how can I solve it?
Step 6/16 : RUN apk add --upgrade --no-cache acl bash bash-doc bash-completion autoconf icu-dev libxml2-dev mysql-dev pcre php7-ctype php7-fileinfo php7-gd php7-intl php7-json php7-mbstring php7-openssl php7-simplexml php7-tokenizer php7-xml php7-bcmath php7-pdo php7-pdo_mysql freetype-dev libjpeg-turbo-dev libpng-dev nodejs patch tidyhtml-dev imap-dev libzip-dev git python2
---> Running in 1ae4ac5b75b6
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/community/x86_64/APKINDEX.tar.gz
ERROR: unable to select packages:
php7-bcmath (no such package):
required by: world[php7-bcmath]
php7-ctype (no such package):
required by: world[php7-ctype]
php7-fileinfo (no such package):
required by: world[php7-fileinfo]
php7-gd (no such package):
required by: world[php7-gd]
php7-intl (no such package):
required by: world[php7-intl]
php7-json (no such package):
required by: world[php7-json]
php7-mbstring (no such package):
required by: world[php7-mbstring]
php7-openssl (no such package):
required by: world[php7-openssl]
php7-pdo (no such package):
required by: world[php7-pdo]
php7-pdo_mysql (no such package):
required by: world[php7-pdo_mysql]
php7-simplexml (no such package):
required by: world[php7-simplexml]
php7-tokenizer (no such package):
required by: world[php7-tokenizer]
php7-xml (no such package):
required by: world[php7-xml]
python2 (no such package):
required by: world[python2]
ERROR: Service 'application' failed to build: The command '/bin/sh -c apk add --upgrade --no-cache acl bash bash-doc bash-completion autoconf icu-dev libxml2-dev mysql-dev pcre php7-ctype php7-fileinfo php7-gd php7-intl php7-json php7-mbstring php7-openssl php7-simplexml php7-tokenizer php7-xml php7-bcmath php7-pdo php7-pdo_mysql freetype-dev libjpeg-turbo-dev libpng-dev nodejs patch tidyhtml-dev imap-dev libzip-dev git python2' returned a non-zero code: 14
EDIT:
Tried suggestion of #Mureinik to use FROM php:7.4-fpm-alpine3.15 instead of FROM php:7.4-fpm-alpine. When I tied this, it gets past the initial error. But I get a different error instead. See below.
#0 69.23 creating libtool
#0 69.26 appending configuration tag "CXX" to libtool
#0 69.32 configure: patching config.h.in
#0 69.32 configure: creating ./config.status
#0 69.36 config.status: creating config.h
#0 69.39 /bin/sh /usr/src/php/ext/iconv/libtool --mode=compile cc -I"/usr/include" -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -I. -I/usr/src/php/ext/iconv -DPHP_ATOM_INC -I/usr/src/php/ext/iconv/include -I/usr/src/php/ext/iconv/main -I/usr/src/php/ext/iconv -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -fstack-protector-strong -fpic -fpie -O2 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DHAVE_CONFIG_H -I/usr/include -fstack-protector-strong -fpic -fpie -O2 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c /usr/src/php/ext/iconv/iconv.c -o iconv.lo
#0 69.45 mkdir .libs
#0 69.45 cc -I/usr/include -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -I. -I/usr/src/php/ext/iconv -DPHP_ATOM_INC -I/usr/src/php/ext/iconv/include -I/usr/src/php/ext/iconv/main -I/usr/src/php/ext/iconv -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -fstack-protector-strong -fpic -fpie -O2 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DHAVE_CONFIG_H -I/usr/include -fstack-protector-strong -fpic -fpie -O2 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c /usr/src/php/ext/iconv/iconv.c -fPIC -DPIC -o .libs/iconv.o
#0 69.60 /usr/src/php/ext/iconv/iconv.c: In function 'zm_startup_miconv':
#0 69.60 /usr/src/php/ext/iconv/iconv.c:284:4: error: '_libiconv_version' undeclared (first use in this function)
#0 69.60 284 | _libiconv_version >> 8, _libiconv_version & 0xff);
#0 69.60 | ^~~~~~~~~~~~~~~~~
#0 69.60 /usr/src/php/ext/iconv/iconv.c:284:4: note: each undeclared identifier is reported only once for each function it appears in
#0 69.60 /usr/src/php/ext/iconv/iconv.c: In function '_php_iconv_appendl':
#0 69.60 /usr/src/php/ext/iconv/iconv.c:181:15: warning: implicit declaration of function 'libiconv'; did you mean 'iconv'? [-Wimplicit-function-declaration]
#0 69.60 181 | #define iconv libiconv
#0 69.60 | ^~~~~~~~
#0 69.60 /usr/src/php/ext/iconv/iconv.c:453:8: note: in expansion of macro 'iconv'
#0 69.60 453 | if (iconv(cd, (char **)&in_p, &in_left, (char **) &out_p, &out_left) == (size_t)-1) {
#0 69.60 | ^~~~~
#0 69.64 make: *** [Makefile:192: iconv.lo] Error 1
------
failed to solve: executor failed running [/bin/sh -c docker-php-ext-install intl zip pcntl pdo_mysql iconv opcache soap tidy imap bcmath && php -r 'ini_set("display_errors", 1); error_reporting(-1); iconv("UTF-8", "ASCII//TRANSLIT", "foobar");']: exit code: 2

Answer 1

you might be missing some repositories under /etc/apk/repositories, which contains these packages. you will need to add them before you could download them.

Answer 2

I looked at the php7-bcmath package, but it seems the same issue occurs in most of them.
This package has builds for Alpine 3.13 through 3.15, but the latest Alpine is 3.16, which doesn't have a build for this package yet. You can wait until it's available, or lock down your Dockerfile to a specific Alpine version that has a build for this package, e.g.:
FROM alpine:3.15
EDIT:
According to additional information supplied in the comments, the dockerfile uses FROM php:7.4-fpm-alpine, which internally uses FROM alpine. Instead, you could use a version that locks down to a specific Alpine version:
FROM php:7.4-fpm-alpine3.15