Added image documentation to docs/dockerhub.md

docs/dockerhub.md

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+# jpo-cvdp
+
+## GitHub Repository Link
+https://github.com/usdot-jpo-ode/jpo-cvdp
+
+## Purpose
+The purpose of the jpo-cvdp program is to filter messages based on location/speed and redact personal identifiable information (PII) from processed messages.
+
+## How to pull the latest image
+The latest image can be pulled using the following command:
+> docker pull usdotjpoode/jpo-cvdp:develop
+
+## Required environment variables
+The image expects the following environment variables to be set:
+- DOCKER_HOST_IP
+- DOCKER_SHARED_VOLUME
+- PPM_CONFIG_FILE
+- REDACTION_PROPERTIES_PATH
+
+## Required files in `ppm_data` mounted directory
+- fieldsToRedact.txt
+- I_80.edges
+- ppmBsm.properties
+
+## Direct Dependencies
+The image will fail to start up if the following containers are not already present:
+- Kafka
+- Zookeeper (relied on by Kafka)
+
+## Indirect Dependencies
+The image will not receive messages to process if the ODE is not running.
+
+## Example docker-compose.yml with direct dependencies:
+```
+version: '2'
+services:
+  zookeeper:
+    image: wurstmeister/zookeeper
+    ports:
+      - "2181:2181"
+
+  kafka:
+    image: wurstmeister/kafka
+    ports:
+      - "9092:9092"
+    environment:
+      KAFKA_ADVERTISED_HOST_NAME: ${DOCKER_HOST_IP}
+      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+      KAFKA_CREATE_TOPICS: "topic.OdeBsmJson:1:1,topic.FilteredOdeBsmJson:1:1,topic.OdeTimJson:1:1,topic.FilteredOdeTimJson:1:1"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+
+  ppm:
+    image: usdotjpoode/jpo-cvdp:release_q3
+    environment:
+      # required
+      DOCKER_HOST_IP: ${DOCKER_HOST_IP}
+      PPM_CONFIG_FILE: ${PPM_CONFIG_FILE}
+      REDACTION_PROPERTIES_PATH: ${REDACTION_PROPERTIES_PATH}
+      # optional
+      PPM_LOG_TO_FILE: "false"
+      PPM_LOG_TO_CONSOLE: ${PPM_LOG_TO_CONSOLE}
+      RPM_DEBUG: "false"
+      PPM_LOG_LEVEL: ${PPM_LOG_LEVEL}
+    depends_on:
+      - kafka
+    volumes:
+      - ${DOCKER_SHARED_VOLUME_WINDOWS}:/ppm_data
+```
+
+## Expected startup output
+The latest logs should look like this:
+```
+jpo-cvdp-ppm-1        | [231109 22:20:14.700649] [info] Waiting for more BSMs from the ODE producer.
+jpo-cvdp-ppm-1        | [231109 22:20:15.201389] [info] Waiting for more BSMs from the ODE producer.
+jpo-cvdp-ppm-1        | [231109 22:20:15.701666] [info] Waiting for more BSMs from the ODE producer.
+jpo-cvdp-ppm-1        | [231109 22:20:16.202104] [info] Waiting for more BSMs from the ODE producer.
+jpo-cvdp-ppm-1        | [231109 22:20:16.702451] [info] Waiting for more BSMs from the ODE producer.
+jpo-cvdp-ppm-1        | [231109 22:20:17.202653] [info] Waiting for more BSMs from the ODE producer.
+```