added hotswap plugin disable parameterization

Dockerfile

@@ -9,6 +9,7 @@ ENV JRE_HOME=/usr/local/lib/jvm/java-openjdk-dcevm
 ENV JAVA_OPTS=
 ENV ENABLE_HOTSWAP=true
 ENV ENABLE_JDWP=true
+ENV DISABLE_HOTSWAP_PLUGINS=
 
 # Install curl
 RUN apt update && \

README.md

@@ -29,9 +29,10 @@ You may include your own `hotswap-agent.properties` in any of the `classes` fold
 You can specify the following environment variables when running the container.
 
 | Environment Variable      | Default Value | Description |
-| -------------------- | ------------- | ----------- |
+| ------------------------- | ------------- | ----------- |
 | `JAVA_MEMORY_INIT`        | `128m`        | The initial and minimum JVM memory. |
 | `JAVA_MEMORY_MAX`         | `512m`        | The maximum JVM memory allowed. |
 | `ENABLE_HOTSWAP`          | `true`        | Set to `false` to disable the HotSwap agent. |
+| `DISABLE_HOTSWAP_PLUGINS` |               | Provide a comma-delimited list of HotSwap plugins to disable.  You can find a list of those plugins here: https://github.com/HotswapProjects/HotswapAgent/tree/master/plugin.  The name is only specified in the source, like [*Spring*](https://github.com/HotswapProjects/HotswapAgent/blob/master/plugin/hotswap-agent-spring-plugin/src/main/java/org/hotswap/agent/plugin/spring/SpringPlugin.java). |
 | `ENABLE_JDWP`             | `true`        | Set to `false` to disable the Java debugger. |
 | `JAVA_OPTS`               |               | Set to extend the standard `JAVA_OPTS` environment variable. |

hotswap-agent.properties

@@ -45,7 +45,7 @@ webappDir=
 
 # Comma separated list of disabled plugins
 # Use plugin name - e.g. Hibernate, Spring, ZK, Hotswapper, AnonymousClassPatch, Tomcat, Logback ....
-disabledPlugins=
+disabledPlugins=${hotswap.disabledPlugins}
 
 # Watch for changed class files on watchResources path and reload class definition in the running application.
 #

setenv.sh

@@ -3,6 +3,7 @@ JAVA_OPTS="${JAVA_OPTS} -Xms${JAVA_MEMORY_INIT} -Xmx${JAVA_MEMORY_MAX}"
 
 if [ "${ENABLE_HOTSWAP}" = "true" ]; then
     JAVA_OPTS="${JAVA_OPTS} -XX:HotswapAgent=external -javaagent:/usr/local/lib/jvm/hotswap-agent.jar"
+    JAVA_OPTS="${JAVA_OPTS} -Dhotswap.disablePlugins=${DISABLE_HOTSWAP_PLUGINS}"
 fi
 
 if [ "${ENABLE_JDWP}" = "true" ]; then