Added README and Dockerfile

.gitignore

@@ -1,2 +1,3 @@
 /.idea/
-/config.yml
+/config.yml
+/notdeadyet

Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.18-alpine AS base
+WORKDIR /app
+
+FROM base AS build
+COPY . .
+RUN go build -v -o notdeadyet
+
+FROM base AS final
+COPY --from=build /app/notdeadyet .
+EXPOSE 80
+CMD [ "/app/notdeadyet", "--config-file=/config/config.yml" ]

README.md

@@ -0,0 +1,45 @@
+# notdeadyet
+
+This is a simple dead man's switch monitoring daemon written in Go. It watches, if an API endpoint is polled at a regular, configurable interval, and triggers an alarm otherwise.
+
+For now, only **Pushover** receivers are supported, but more can be added easily.
+
+## Usage
+
+### Configuration file
+
+Take a look at the following sample to write your own `config.yml`:
+
+```yaml
+listen: ':80'  # Optional
+apps:
+  - name: Test App
+    token: djms90x1hqflyggx  # Generate a random token yourself
+    timeout: 1h
+    repeat_interval: 1h
+    notify:
+      - Super Administrator
+receivers:
+  pushover:
+    - name: Super Administrator
+      user_key: ...
+      token: ...
+      priority: 0
+```
+
+### Run
+
+You can then run the daemon with
+```
+./notdeadyet --config-file=config.yml
+```
+
+or use the provided Docker images and mount your config into `/config/config.yml`.
+
+### Making requests
+
+You should configure your monitored applications to make regular `GET` or `POST` requests against `http://SERVER/im-alive/TOKEN` to tell `notdeadyet` that the app is still alive.
+
+If the monitored app stops making these requests for the duration configured in `timeout`, then the selected receivers will receive a notification. When the app starts making requests again, a notification is sent, that the app is back.
+
+**Have fun!**

main.go

@@ -142,7 +142,7 @@ func initWatchers() {
 }
 
 func handleIndex(c *gin.Context) {
-	c.String(http.StatusOK, "Not Dead Yet? - The dead man switch monitoring daemon.")
+	c.String(http.StatusOK, "Not Dead Yet? - The dead man's switch monitoring daemon.")
 }
 
 func handleLiveSign(c *gin.Context) {