Manually merge PR#79.

Dockerfile

@@ -12,6 +12,7 @@ ENV AUTOHEAL_CONTAINER_LABEL=autoheal \
     DOCKER_SOCK=/var/run/docker.sock \
     CURL_TIMEOUT=30 \
     WEBHOOK_URL="" \
+    WEBHOOK_JSON_KEY="content" \
     APPRISE_URL=""
 
 HEALTHCHECK --interval=5s CMD pgrep -f autoheal || exit 1

README.md

@@ -1,6 +1,6 @@
 # Docker Autoheal
 
-Monitor and restart unhealthy docker containers. 
+Monitor and restart unhealthy docker containers.
 This functionality was proposed to be included with the addition of `HEALTHCHECK`, however didn't make the cut.
 This container is a stand-in till there is native support for `--exit-on-unhealthy` https://github.com/docker/docker/pull/22719.
 
@@ -33,7 +33,7 @@ docker run -d \
 ```
 a) Apply the label `autoheal=true` to your container to have it watched.
 
-b) Set ENV `AUTOHEAL_CONTAINER_LABEL=all` to watch all running containers. 
+b) Set ENV `AUTOHEAL_CONTAINER_LABEL=all` to watch all running containers.
 
 c) Set ENV `AUTOHEAL_CONTAINER_LABEL` to existing label name that has the value `true`.
 
@@ -60,7 +60,7 @@ http://localhost:8000/cfg/autoheal
 
 See the Apprise wiki for configuration details: https://github.com/caronc/apprise/wiki
 
-c) Set the `APPRISE_URL` environment variable to use the Apprise configuration: 
+c) Set the `APPRISE_URL` environment variable to use the Apprise configuration:
 `APPRISE_URL="http://localhost:8000/notify/autoheal"`
 
 ## ENV Defaults
@@ -72,6 +72,7 @@ AUTOHEAL_DEFAULT_STOP_TIMEOUT=10   # Docker waits max 10 seconds (the Docker def
 DOCKER_SOCK=/var/run/docker.sock   # Unix socket for curl requests to Docker API
 CURL_TIMEOUT=30     # --max-time seconds for curl requests to Docker API
 WEBHOOK_URL=""    # post message to the webhook if a container was restarted (or restart failed)
+WEBHOOK_JSON_KEY="content"    # the key to use for the message in the json body of the request to the webhook url
 APPRISE_URL=""    # post message to Apprise if a container was restarted (or restart failed)
 ```
 
@@ -87,5 +88,5 @@ docker build -t autoheal .
 docker run -d \
     -e AUTOHEAL_CONTAINER_LABEL=all \
     -v /var/run/docker.sock:/var/run/docker.sock \
-    autoheal                                                                        
+    autoheal
 ```

docker-entrypoint

@@ -8,6 +8,7 @@ DOCKER_SOCK=${DOCKER_SOCK:-/var/run/docker.sock}
 UNIX_SOCK=""
 CURL_TIMEOUT=${CURL_TIMEOUT:-30}
 WEBHOOK_URL=${WEBHOOK_URL:-""}
+WEBHOOK_JSON_KEY=${WEBHOOK_JSON_KEY:-"text"}
 APPRISE_URL=${APPRISE_URL:-""}
 
 # only use unix domain socket if no TCP endpoint is defined
@@ -81,8 +82,8 @@ generate_webhook_payload() {
   local text="$@"
   cat <<EOF
 {
-  "content":"$text"
-} 
+  "$WEBHOOK_JSON_KEY":"$text"
+}
 EOF
 }
 
@@ -92,7 +93,7 @@ generate_apprise_payload() {
 {
   "title":"Autoheal",
   "body":"$text"
-} 
+}
 EOF
 }
 
@@ -141,7 +142,7 @@ then
         then
           echo "$DATE Restarting container $CONTAINER_SHORT_ID failed" >&2
           notify_webhook "Container ${CONTAINER_NAME:1} (${CONTAINER_SHORT_ID}) found to be unhealthy. Failed to restart the container!" &
-        else 
+        else
           notify_webhook "Container ${CONTAINER_NAME:1} (${CONTAINER_SHORT_ID}) found to be unhealthy. Successfully restarted the container!" &
         fi
       fi