json2collectdmqtt: create new Docker image

README.md

@@ -74,6 +74,7 @@ Image		     	| Purpose
 `imap-download`     | Fetchmail, procmail, inotifywait, and munpack working together to download emails and extract attachments. The provided fetchmailrc must be owned by `10000:10000`.
 `archivebox`        | Dockerised [ArchiveBox](https://archivebox.io/)
 `tinyproxy`         | Dockerised [tinyproxy](https://tinyproxy.github.io/) - config file should be mounted read-only to `/srv/tinyproxy.conf`
+`json2collectdmqtt`	| Dockerised [json2collectdmqtt](https://github.com/sbrl/json2collectdmqtt) - `KEY=value` environment file should be mounted to `/srv/env`
 
 
 ## Docker container UID/GID map
@@ -92,6 +93,8 @@ UID     | GID	| Container				| Notes
 0		| 0		| imap-download			| Uses fetchmail to download emails and extract attachments. The provided fetchmailrc must be owned by `10000:10000`, and be chmodded to `0700`.
 10200	| 10200	| archivebox			| 
 10300   | 10300 | tinyproxy             | 
+10400	| 10400	| json2collectdmqtt		| `chown` environment file to `10400:10400`, as it's loaded by a startup shell script inside the container
+
 
 ## Development Notes
 

images/json2collectdmqtt/Dockerfile

@@ -0,0 +1,15 @@
+ARG REPO_LOCATION
+# ARG BASE_VERSION
+
+FROM ${REPO_LOCATION}minideb-node
+
+RUN npm install --global json2collectdmqtt && rm -rf "$(npm get cache)";
+COPY ./run.sh /usr/local/bin/run.sh
+
+VOLUME [ "/srv" ]
+
+USER 80:80
+
+ENV NODE_ENV production
+WORKDIR /srv
+ENTRYPOINT [ "/usr/local/bin/run.sh" ]

images/json2collectdmqtt/run.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+# Username / password are best stored in an env file rather than a Nomad job file
+if [[ -r "/srv/env" ]]; then
+	#shellcheck disable=SC2046
+	export $(xargs </srv/env);
+fi
+
+if [[ -n "${MQTT_SERVER}" ]]; then
+	JSON2COLLECTDMQTT_ARGS="${JSON2COLLECTDMQTT_ARGS} --server ${MQTT_SERVER}";
+fi
+
+exec json2collectdmqtt

images/json2collectdmqtt/type.txt

@@ -0,0 +1 @@
+docker