Update php image tag to php:7.0-apache-jessie

Update the base image tag from php:7.0-apache to php:7.0-apache-jessie
since php:7.0-apache now uses stretch as a base and the package
dependencies need to be evolved before just switching to stretch.

comanage-registry-basic-auth/Dockerfile.template

@@ -16,7 +16,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM php:7.0-apache
+FROM php:7.0-apache-jessie
 
 RUN apt-get update && apt-get install -y \
          libldap-2.4-2 \

comanage-registry-mod-auth-openidc/Dockerfile.template

@@ -16,7 +16,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM php:7.0-apache
+FROM php:7.0-apache-jessie
 
 RUN apt-get update && apt-get install -y \
          libldap-2.4-2 \

comanage-registry-shibboleth-sp/Dockerfile.template

@@ -23,7 +23,7 @@
 #  and includes pdo
 # but xls, pdo_mysql, pdo_pgsql, mysqli, pgsql, 
 # and ldap extensions must be built.
-FROM php:7.0-apache
+FROM php:7.0-apache-jessie
 
 RUN apt-get update \
       && apt-get install -y --no-install-recommends \

comanage-registry/Dockerfile.template

@@ -16,7 +16,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM php:7.0-apache
+FROM php:7.0-apache-jessie
 
 RUN apt-get update && apt-get install -y \
          libldap-2.4-2 \