From 4d96f6f19c82ab7106f57ffd38a06d8f444cc6c4 Mon Sep 17 00:00:00 2001
From: Andre Henn <henn@terrestris.de>
Date: Mon, 11 Dec 2023 14:20:01 +0100
Subject: [PATCH 1/2] introduce health checks for GeoServer and postgis

---
 Dockerfile              | 4 ++++
 README.md               | 1 +
 docker-compose-demo.yml | 7 ++++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 4bd8921..1814cac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -95,6 +95,7 @@ ENV ROOT_WEBAPP_REDIRECT=false
 ENV POSTGRES_JNDI_ENABLED=false
 ENV CONFIG_DIR=/opt/config
 ENV CONFIG_OVERRIDES_DIR=/opt/config_overrides
+ENV HEALTHCHECK_URL=http://localhost:8080/geoserver/web/wicket/resource/org.geoserver.web.GeoServerBasePage/img/logo.png
 
 EXPOSE 8080
 
@@ -126,3 +127,6 @@ RUN chmod +x /opt/*.sh
 ENTRYPOINT ["/opt/startup.sh"]
 
 WORKDIR /opt
+
+HEALTHCHECK --interval=1m --timeout=20s --retries=3 \
+  CMD curl --fail $HEALTHCHECK_URL || exit 1
diff --git a/README.md b/README.md
index 00fb04a..91bccdd 100644
--- a/README.md
+++ b/README.md
@@ -184,6 +184,7 @@ Following is the list of the all the environment variables that can be passed do
 | ADDITIONAL_FONTS_DIR | Sets the directory for additional fonts used by GeoServer | `/opt/additional_fonts/` |
 | SKIP_DEMO_DATA | Indicates whether to skip the installation of demo data provided by GeoServer | `false` |
 | ROOT_WEBAPP_REDIRECT | Indicates whether to issue a permanent redirect to the web interface | `false` |
+| HEALTHCHECK_URL | URL to the resource / endpoint used for `docker` health checks | `http://localhost:8080/geoserver/web/wicket/resource/org.geoserver.web.GeoServerBasePage/img/logo.png` |
 
 The following values cannot really be safely changed (as they are used to download extensions and community modules as the docker image first starts up).
 | VAR NAME | DESCRIPTION | SAMPLE VALUE |
diff --git a/docker-compose-demo.yml b/docker-compose-demo.yml
index 72a2492..03b8b85 100644
--- a/docker-compose-demo.yml
+++ b/docker-compose-demo.yml
@@ -8,7 +8,7 @@ services:
         - CORS_ENABLED=true
         - CORS_ALLOWED_METHODS=GET,POST,PUT,HEAD,OPTIONS
     ports:
-      - 80:8080
+      - "80:8080"
     environment:
       - INSTALL_EXTENSIONS=true
       - STABLE_EXTENSIONS=wps,csw
@@ -32,3 +32,8 @@ services:
       POSTGRES_PASSWORD: geoserver
     volumes:
       - ./postgis/postgresql_data:/var/lib/postgresql/data:Z
+    healthcheck:
+      test: pg_isready -U geoserver -h localhost -t 5 || exit 1
+      interval: 10s
+      retries: 5
+      timeout: 10s

From 9b80e8c4103ba2a78b7846b396e3f7e2e6cda1d1 Mon Sep 17 00:00:00 2001
From: Andre Henn <henn@terrestris.de>
Date: Wed, 20 Dec 2023 12:30:10 +0100
Subject: [PATCH 2/2] feat: adds health check (default values) to
 docker-compose file

---
 docker-compose-demo.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docker-compose-demo.yml b/docker-compose-demo.yml
index 03b8b85..8de1fc4 100644
--- a/docker-compose-demo.yml
+++ b/docker-compose-demo.yml
@@ -23,6 +23,11 @@ services:
     volumes:
       - ./geoserver_data:/opt/geoserver_data/:Z
       - ./additional_libs:/opt/additional_libs:Z # by mounting this we can install libs from host on startup
+    healthcheck:
+      test: curl --fail "http://localhost:8080/geoserver/web/wicket/resource/org.geoserver.web.GeoServerBasePage/img/logo.png" || exit 1
+      interval: 1m
+      retries: 3
+      timeout: 20s
   postgis:
     image: postgis/postgis:16-3.4-alpine
     ports: