Fix JAR download URLs

Author: rmoff

connect-jdbc/docker-compose.yml

@@ -87,10 +87,12 @@ services:
         # ------------
         # MySQL
         cd /usr/share/java/kafka-connect-jdbc/
-        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.16.tar.gz | tar xz 
+        # See https://dev.mysql.com/downloads/connector/j/
+        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.23.tar.gz | tar xz 
         # MS SQL
         cd /usr/share/java/kafka-connect-jdbc/
-        curl http://central.maven.org/maven2/com/microsoft/sqlserver/mssql-jdbc/7.0.0.jre8/mssql-jdbc-7.0.0.jre8.jar --output mssql-jdbc-7.0.0.jre8.jar
+        # See https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc/7.0.0.jre8
+        curl https://repo1.maven.org/maven2/com/microsoft/sqlserver/mssql-jdbc/7.0.0.jre8/mssql-jdbc-7.0.0.jre8.jar --output mssql-jdbc-7.0.0.jre8.jar
         # # Oracle
         cp /db-leach/jdbc/lib/ojdbc8.jar /usr/share/java/kafka-connect-jdbc
         # Now launch Kafka Connect

kafka-connect-single-message-transforms/docker-compose.yml

@@ -111,7 +111,8 @@ services:
         # ------------
         # MySQL
         cd /usr/share/confluent-hub-components/confluentinc-kafka-connect-jdbc/lib
-        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.21.tar.gz | tar xz 
+        # See https://dev.mysql.com/downloads/connector/j/
+        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.23.tar.gz | tar xz 
         #
         echo "Launching Kafka Connect worker"
         /etc/confluent/docker/run &

no-more-silos/docker-compose.yml

@@ -86,7 +86,8 @@ services:
         # # ------------
         # # MySQL
         cd /usr/share/confluent-hub-components/confluentinc-kafka-connect-jdbc
-        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.21.tar.gz | tar xz 
+        # See https://dev.mysql.com/downloads/connector/j/
+        curl https://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-8.0.23.tar.gz | tar xz 
         #
         # Now launch Kafka Connect
         /etc/confluent/docker/run &