Update Dockerfile maintainer field to recommended method

activemq/Dockerfile

@@ -1,5 +1,5 @@
 FROM java
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Download and install ActiveMQ

basic-runtimes/java/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install Java 1.8 JRE

basic-runtimes/php/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install PHP runtime

basic-runtimes/python2/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install XML libs

basic-runtimes/python3/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install XML libs

basic-runtimes/ruby/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install Ruby runtime dependencies

basic-runtimes/tomcat/Dockerfile

@@ -1,5 +1,5 @@
 FROM java
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install Tomcat 8

basic/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:3.8
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install S6 supervisor

ckan-datapusher/Dockerfile

@@ -1,5 +1,5 @@
 FROM python2
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

ckan/Dockerfile

@@ -1,5 +1,5 @@
 FROM python2
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Add edge/testing repository

crisiscleanup/Dockerfile

@@ -1,5 +1,5 @@
 FROM ruby
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install NodeJS runtime

cts/Dockerfile

@@ -1,5 +1,5 @@
 FROM python2
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Add edge/testing repository

frontlinesms/Dockerfile

@@ -1,5 +1,5 @@
 FROM java
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

gnuhealth/Dockerfile

@@ -1,5 +1,5 @@
 FROM python3
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install NodeJS runtime

kanboard/Dockerfile

@@ -1,5 +1,5 @@
 FROM php
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

mariadb/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Create OS user (which will be picked up later by apk add)

mifosx/Dockerfile

@@ -1,5 +1,5 @@
 FROM tomcat
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install full-featured wget to work around sourceforge bugs

motech/Dockerfile

@@ -1,5 +1,5 @@
 FROM tomcat
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Download Motech

opendatakit-build/Dockerfile

@@ -1,5 +1,5 @@
 FROM ruby
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install NodeJS runtime

opendatakit/Dockerfile

@@ -1,5 +1,5 @@
 FROM tomcat
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install build dependencies

openmapkit/Dockerfile

@@ -1,5 +1,5 @@
 FROM java
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install NodeJS runtime

pandora/Dockerfile

@@ -1,5 +1,5 @@
 FROM python3
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

postfix/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Create OS user (which will be picked up later by apk add)

postgres/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:3.8
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Modify OS user (which will be picked up later by apk add)

rabbitmq/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:3.8
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Create OS user (which will be picked up later by apk add)

redis/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:3.8
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Create OS user (which will be picked up later by apk add)

sahana/Dockerfile

@@ -1,5 +1,5 @@
 FROM python2
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Add edge/testing repository

seeddms/Dockerfile

@@ -1,5 +1,5 @@
 FROM php
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

sigmah/Dockerfile

@@ -1,5 +1,5 @@
 FROM tomcat
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Download Sigmah

solr/Dockerfile

@@ -1,5 +1,5 @@
 FROM java
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies

ushahidi/Dockerfile

@@ -1,5 +1,5 @@
 FROM php
-MAINTAINER Disassembler <disassembler@dasm.cz>
+LABEL maintainer="Disassembler <disassembler@dasm.cz>"
 
 RUN \
  # Install runtime dependencies