Add healthchecks, sprinkle some README

README.md

@@ -6,8 +6,8 @@
 
 * **Category**: Apps
 * **Status**: 0
-* **Image**: [`lemmy`](https://hub.docker.com/r/lemmy), 4, upstream
-* **Healthcheck**: No
+* **Image**: [`lemmy`](https://hub.docker.com/r/dessalines/lemmy) etc., 4, upstream
+* **Healthcheck**: Yes
 * **Backups**: No
 * **Email**: No
 * **Tests**: No
@@ -22,3 +22,29 @@
 * `abra app deploy <app-name>`
 
 For more, see [`docs.coopcloud.tech`](https://docs.coopcloud.tech).
+
+## Updating `config.hjson`
+
+If you make changes in your environment after deployment, e.g. using 
+`abra app config <app-name>`, the new settings won't automatically be applied to
+your `config.hjson`.
+
+**If you haven't made manual changes to your `config.hjson`**, then delete the
+auto-generated `config.hjson`, and let Lemmy auto-generate a new one:
+
+```
+abra app run <app-name> app rm /configconfig.hjson
+abra app restart <app-name> app
+```
+
+**If you made manual changes to your `config.hjson`**, then compare the old and
+the new files, and manually merge the changes:
+
+```
+abra app run <app-name> app sh
+apt update && sudo apt install vim-tiny
+diff -ur /config/config.hjson /config/config.hjson.tmpl
+vim /config/config.hjson
+exit
+abra app restart <app-name> app
+```

compose.yml

@@ -34,6 +34,12 @@ services:
         condition: on-failure
       labels:
         - "coop-cloud.${STACK_NAME}.version="
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:8536/api/v3/site"]
+      interval: 30s
+      timeout: 10s
+      retries: 10
+      start_period: 1m
 
   ui:
     image: dessalines/lemmy-ui:0.16.1
@@ -45,6 +51,12 @@ services:
       - backend
     depends_on:
       - app
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:1234"]
+      interval: 30s
+      timeout: 10s
+      retries: 10
+      start_period: 1m
 
   db:
     image: postgres:12-alpine