title: Error relocating - symbol not found - building docker-fpm-alpine image
body: <p>Trying to create an image (from a working one) I got this error, been googling the solution but couldn't find a proper one, I asume something's wrong with libraries. Don't fully understand what "Error relocating symbol not found" means, the previous steps ran successfully, this is the error output:</p>
  
  <pre><code>    Executing busybox-1.28.4-r1.trigger
  Executing ca-certificates-20171114-r3.trigger
  OK: 142 MiB in 67 packages
  + mkdir -p /usr/src/php/ext
  + wget https://pecl.php.net/get/memcached
  Error relocating /lib/libssl.so.45: explicit_bzero: symbol not found
  Error relocating /lib/libssl.so.45: getentropy: symbol not found
  Error relocating /lib/libcrypto.so.43: explicit_bzero: symbol not found
  Error relocating /lib/libcrypto.so.43: getentropy: symbol not found
  Removing intermediate container e3b8422b922a
  The command '/bin/sh -c set -xe &amp;&amp; apk add --no-cache py-setuptools git wget bash py-setuptools zlib-dev libpng-dev freetype-dev libjpeg-turbo-dev libmcrypt-dev libmemcached-dev icu-dev libxml2-dev &amp;&amp; apk add --no-cache libressl-dev cyrus-sasl-dev --repository http://dl-cdn.alpinelinux.org/alpine/edge/main/ rabbitmq-c-dev gnu-libiconv --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing/ --allow-untrusted &amp;&amp; mkdir -p /usr/src/php/ext &amp;&amp; wget https://pecl.php.net/get/memcached &amp;&amp; tar -xf memcached &amp;&amp; rm memcached &amp;&amp; mv memcached-* /usr/src/php/ext/memcached &amp;&amp; wget https://pecl.php.net/get/redis &amp;&amp; tar -xf redis &amp;&amp; rm redis &amp;&amp; mv redis-* /usr/src/php/ext/redis &amp;&amp; wget https://pecl.php.net/get/amqp &amp;&amp; tar -xf amqp &amp;&amp; rm amqp &amp;&amp; mv amqp-* /usr/src/php/ext/amqp &amp;&amp; wget https://pecl.php.net/get/igbinary &amp;&amp; tar -xf igbinary &amp;&amp; rm igbinary &amp;&amp; mv igbinary-* /usr/src/php/ext/igbinary &amp;&amp; wget https://pecl.php.net/get/apcu &amp;&amp; tar -xf apcu &amp;&amp; rm apcu &amp;&amp; mv apcu-* /usr/src/php/ext/apcu &amp;&amp; wget https://pecl.php.net/get/mcrypt &amp;&amp; tar -xf mcrypt &amp;&amp; rm mcrypt &amp;&amp; mv mcrypt-* /usr/src/php/ext/mcrypt &amp;&amp; git clone --recursive --depth=1 https://github.com/kjdev/php-ext-snappy.git &amp;&amp; mv php-ext-snappy /usr/src/php/ext/snappy &amp;&amp; docker-php-ext-install pdo_mysql opcache zip pcntl mcrypt iconv soap intl xml amqp igbinary redis snappy apcu &amp;&amp; docker-php-ext-configure memcached --enable-memcached-igbinary --disable-memcached-sasl &amp;&amp; docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ &amp;&amp; docker-php-ext-install gd memcached &amp;&amp; echo 'extension = "apcu.so"' &gt; /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini &amp;&amp; echo 'apc.shm_size = 256M' &gt;&gt; /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini' returned a non-zero code: 127
  </code></pre>