diff --git a/7.1/Dockerfile b/7.1/Dockerfile
index 1b801a0..8b067d5 100644
--- a/7.1/Dockerfile
+++ b/7.1/Dockerfile
@@ -68,5 +68,9 @@ RUN composer global require "squizlabs/php_codesniffer=*"
 # Cleanup dev dependencies
 RUN apk del -f .build-deps
 
+# fix work iconv library with alphine
+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
+
 # Setup working directory
 WORKDIR /var/www
diff --git a/7.2/Dockerfile b/7.2/Dockerfile
index 64e9d93..6c751a4 100644
--- a/7.2/Dockerfile
+++ b/7.2/Dockerfile
@@ -68,5 +68,9 @@ RUN composer global require "squizlabs/php_codesniffer=*"
 # Cleanup dev dependencies
 RUN apk del -f .build-deps
 
+# fix work iconv library with alphine
+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
+
 # Setup working directory
 WORKDIR /var/www
diff --git a/7.3/Dockerfile b/7.3/Dockerfile
index ba63ac0..6df8019 100644
--- a/7.3/Dockerfile
+++ b/7.3/Dockerfile
@@ -66,5 +66,9 @@ RUN composer global require "squizlabs/php_codesniffer=*"
 # Cleanup dev dependencies
 RUN apk del -f .build-deps
 
+# fix work iconv library with alphine
+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
+
 # Setup working directory
 WORKDIR /var/www
diff --git a/latest/Dockerfile b/latest/Dockerfile
index b15230c..bf20bdf 100644
--- a/latest/Dockerfile
+++ b/latest/Dockerfile
@@ -66,5 +66,9 @@ RUN composer global require "squizlabs/php_codesniffer=*"
 # Cleanup dev dependencies
 RUN apk del -f .build-deps
 
+# fix work iconv library with alphine
+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
+
 # Setup working directory
 WORKDIR /var/www