Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Set Gerrit to 3.0.16
  Set Gerrit to 2.16.26
  Set Gerrit to 3.0.15
  Set Gerrit to 2.16.25
  Set Gerrit to 3.0.14
  Set Gerrit to 2.16.24
  Set Gerrit to 2.16.23
  Set Gerrit to 3.0.13

Change-Id: I27fe1ad5831430fd68d8ed2aed984d36b7f59e33
diff --git a/README.md b/README.md
index 2fac467..094bad6 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,14 @@
 
 Run ```docker-compose up``` to trigger the build and execution of your custom Gerrit docker setup.
 
+## Environment variables
+
+This is a list of available environment variables to change the Gerrit configuration:
+
+* `CANONICAL_WEB_URL`: Optional. Set the `gerrit.canonicalWebUrl` parameter in `gerrit.config`.
+Defaults to `http://<image_hostname>`
+* `HTTPD_LISTEN_URL`: Optional. Override the `httpd.listenUrl` parameter in `gerrit.config`.
+
 ## Using Gerrit in production
 
 When running Gerrit on Docker in production, it is a good idea to rely on a physical external
diff --git a/centos/7/Dockerfile b/centos/7/Dockerfile
index b55644f..da1a75d 100644
--- a/centos/7/Dockerfile
+++ b/centos/7/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos:7.6.1810
+FROM centos:7.7.1908
 MAINTAINER Gerrit Code Review Community
 
 # Add Gerrit packages repository
@@ -10,7 +10,7 @@
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN yum -y install initscripts && \
     yum -y install java-1.8.0-openjdk && \
-    yum -y install gerrit-3.0.16-1 && \
+    yum -y install gerrit-3.1.11-1 && \
     /entrypoint.sh init && \
     rm -f /var/gerrit/etc/{ssh,secure}* && rm -Rf /var/gerrit/{static,index,logs,data,index,cache,git,db,tmp}/* && chown -R gerrit:gerrit /var/gerrit && \
     yum -y clean all
@@ -18,6 +18,7 @@
 USER gerrit
 
 ENV CANONICAL_WEB_URL=
+ENV HTTPD_LISTEN_URL=
 
 # Allow incoming traffic
 EXPOSE 29418 8080
diff --git a/centos/7/Dockerfile-dev b/centos/7/Dockerfile-dev
index 2c2ee44..dfba96d 100644
--- a/centos/7/Dockerfile-dev
+++ b/centos/7/Dockerfile-dev
@@ -26,6 +26,7 @@
     git config --add -f /var/gerrit/etc/gerrit.config container.javaOptions "-Djava.security.egd=file:/dev/./urandom"
 
 ENV CANONICAL_WEB_URL=
+ENV HTTPD_LISTEN_URL=
 
 # Allow incoming traffic
 EXPOSE 29418 8080
diff --git a/centos/7/entrypoint.sh b/centos/7/entrypoint.sh
index cb459b5..bf40fc8 100755
--- a/centos/7/entrypoint.sh
+++ b/centos/7/entrypoint.sh
@@ -9,6 +9,10 @@
 fi
 
 git config -f /var/gerrit/etc/gerrit.config gerrit.canonicalWebUrl "${CANONICAL_WEB_URL:-http://$HOSTNAME}"
+if [ ${HTTPD_LISTEN_URL} ];
+then
+  git config -f /var/gerrit/etc/gerrit.config httpd.listenUrl ${HTTPD_LISTEN_URL}
+fi
 
 if [ "$1" != "init" ]
 then
diff --git a/ubuntu/18/Dockerfile b/ubuntu/18/Dockerfile
index 297444b..79b379e 100644
--- a/ubuntu/18/Dockerfile
+++ b/ubuntu/18/Dockerfile
@@ -16,7 +16,7 @@
 # Install OpenJDK and Gerrit in two subsequent transactions
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN apt-get -y install openjdk-8-jdk
-RUN apt-get -y install gerrit=3.0.16-1 && \
+RUN apt-get -y install gerrit=3.1.11-1 && \
     apt-mark hold gerrit && \
     /entrypoint.sh init && \
     rm -f /var/gerrit/etc/{ssh,secure}* && rm -Rf /var/gerrit/{static,index,logs,data,index,cache,git,db,tmp}/* && chown -R gerrit:gerrit /var/gerrit
@@ -24,6 +24,7 @@
 USER gerrit
 
 ENV CANONICAL_WEB_URL=
+ENV HTTPD_LISTEN_URL=
 
 # Allow incoming traffic
 EXPOSE 29418 8080
diff --git a/ubuntu/18/Dockerfile-dev b/ubuntu/18/Dockerfile-dev
index 761b9d6..a0a35ae 100644
--- a/ubuntu/18/Dockerfile-dev
+++ b/ubuntu/18/Dockerfile-dev
@@ -24,6 +24,7 @@
     git config --add -f /var/gerrit/etc/gerrit.config container.javaOptions "-Djava.security.egd=file:/dev/./urandom"
 
 ENV CANONICAL_WEB_URL=
+ENV HTTPD_LISTEN_URL=
 
 # Allow incoming traffic
 EXPOSE 29418 8080
diff --git a/ubuntu/18/entrypoint.sh b/ubuntu/18/entrypoint.sh
index cb459b5..bf40fc8 100755
--- a/ubuntu/18/entrypoint.sh
+++ b/ubuntu/18/entrypoint.sh
@@ -9,6 +9,10 @@
 fi
 
 git config -f /var/gerrit/etc/gerrit.config gerrit.canonicalWebUrl "${CANONICAL_WEB_URL:-http://$HOSTNAME}"
+if [ ${HTTPD_LISTEN_URL} ];
+then
+  git config -f /var/gerrit/etc/gerrit.config httpd.listenUrl ${HTTPD_LISTEN_URL}
+fi
 
 if [ "$1" != "init" ]
 then