Moving out the cat service as an example.

sample-functions/Dockerfile

@@ -1,9 +0,0 @@
-FROM alpine:latest
-RUN apk --update add nodejs
-COPY ./fwatchdog /usr/bin/
-
-COPY package.json .
-COPY main.js .
-RUN npm i
-ENV fprocess="node main.js"
-CMD ["fwatchdog"]

sample-functions/catservice/Dockerfile

@@ -0,0 +1,9 @@
+FROM alpine:latest
+ENTRYPOINT []
+
+COPY ./fwatchdog /usr/bin/fwatchdog
+ENV fprocess "cat"
+
+
+EXPOSE 8080
+CMD ["/usr/bin/fwatchdog"]

sample-functions/catservice/README.md

@@ -0,0 +1,17 @@
+* Build the watchdog app which outputs fwatchdog
+
+* Copy fwatchdog to the directory of each function you want to build.
+
+* Create a service for each function:
+
+```
+# docker build -t catservice .
+# docker service rm catservice ; docker service create --network=functions --name catservice catservice
+```
+
+* Consume it like this:
+
+```
+# curl -X POST -d @$HOME/.ssh/id_rsa.pub -H "X-Function: catservice" localhost:8080/
+ssh-rsa AAAAB3NzaC1yc2....
+```

sample-functions/main.js

@@ -1,3 +0,0 @@
-'use strict'
-let os = require('os');
-console.log(os.platform(), os.arch(), os.cpus(), os.uptime(), os.userInfo());

sample-functions/package.json

@@ -1,12 +0,0 @@
-{
-  "name": "sample-functions",
-  "version": "1.0.0",
-  "description": "",
-  "main": "main.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC"
-}