diff --git a/codepot/docker/Dockerfile.alpine b/codepot/docker/Dockerfile.alpine
index 6d45a9fa..90402bf5 100644
--- a/codepot/docker/Dockerfile.alpine
+++ b/codepot/docker/Dockerfile.alpine
@@ -56,7 +56,7 @@ COPY --from=installer /root/packages/x86_64/apache2-mod-perl-2.0.12-r1.apk /tmp
 RUN \
 	apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing/ \
 		subversion apache2 libldap \
-		php7-apache2 php7-gd php7-sqlite3 php7-ldap php7-ctype \
+		php7-apache2 php7-gd php7-sqlite3 php7-ldap php7-mbstring php7-ctype \
 		php7-iconv php7-pdo php7-pdo_sqlite php7-pdo_mysql php7-zip \
 		apache2-webdav mod_dav_svn \
 		perl-switch perl-config-simple perl-digest-sha1 \
diff --git a/codepot/docker/Makefile.am b/codepot/docker/Makefile.am
index 54e96932..aa92dc65 100644
--- a/codepot/docker/Makefile.am
+++ b/codepot/docker/Makefile.am
@@ -6,7 +6,7 @@ all:
 	@echo "  alpine rocky ubnt"
 
 alpine: @srcdir@/codepot-@VERSION@.tar.gz
-	$(DOCKER) build -t codepot:ubnt -f @srcdir@/Dockerfile.alpine @srcdir@ || true
+	$(DOCKER) build -t codepot:alpine -f @srcdir@/Dockerfile.alpine @srcdir@ || true
 	rm -f @srcdir@/codepot-@VERSION@.tar.gz
 
 rocky: @srcdir@/codepot-@VERSION@.tar.gz
diff --git a/codepot/docker/Makefile.in b/codepot/docker/Makefile.in
index d28f7e39..4f4a0ead 100644
--- a/codepot/docker/Makefile.in
+++ b/codepot/docker/Makefile.in
@@ -417,7 +417,7 @@ all:
 	@echo "  alpine rocky ubnt"
 
 alpine: @srcdir@/codepot-@VERSION@.tar.gz
-	$(DOCKER) build -t codepot:ubnt -f @srcdir@/Dockerfile.alpine @srcdir@ || true
+	$(DOCKER) build -t codepot:alpine -f @srcdir@/Dockerfile.alpine @srcdir@ || true
 	rm -f @srcdir@/codepot-@VERSION@.tar.gz
 
 rocky: @srcdir@/codepot-@VERSION@.tar.gz