Fixed health check in docker compose files

web-apache-mysql/alpine/Dockerfile

@@ -34,6 +34,7 @@ RUN addgroup zabbix && \
     apk add ${APK_FLAGS_PERSISTENT} \
             apache2 \
             bash \
+            curl \
             mariadb-client \
             mariadb-client-libs \
             php7-apache2 \

web-apache-mysql/centos/Dockerfile

@@ -68,6 +68,7 @@ RUN groupadd --system zabbix && \
     yum ${YUM_FLAGS_COMMON} makecache && \
     yum ${YUM_FLAGS_PERSISTENT} install \
             dejavu-sans-fonts \
+            curl \
             httpd \
             mariadb \
             php \

web-apache-mysql/ubuntu/Dockerfile

@@ -36,6 +36,7 @@ RUN locale-gen $LC_ALL && \
     apt-get ${APT_FLAGS_COMMON} update && \
     apt-get ${APT_FLAGS_PERSISTENT} install \
             apache2 \
+            curl \
             libapache2-mod-php5 \
             mysql-client \
             php5-gd \