[kots]: apply customization file to Installer

Author: Simon Emms

install/kots/manifests/gitpod-installation-status.yaml

@@ -30,7 +30,7 @@ spec:
       containers:
         - name: installation-status
           # This will normally be the release tag
-          image: "eu.gcr.io/gitpod-core-dev/build/installer:sje-azure-minio-gateway.0"
+          image: "eu.gcr.io/gitpod-core-dev/build/installer:sje-kots-customization.1"
           command:
             - /bin/sh
             - -c

install/kots/manifests/gitpod-installer-job.yaml

@@ -28,7 +28,7 @@ spec:
       containers:
         - name: installer
           # This will normally be the release tag
-          image: "eu.gcr.io/gitpod-core-dev/build/installer:sje-azure-minio-gateway.0"
+          image: "eu.gcr.io/gitpod-core-dev/build/installer:sje-kots-customization.1"
           volumeMounts:
             - mountPath: /config-patch
               name: config-patch
@@ -261,6 +261,18 @@ spec:
                 done
               fi
 
+              if [ '{{repl ConfigOptionEquals "advanced_mode_enabled" "1" }}' = "true" ];
+              then
+                if [ '{{repl ConfigOptionNotEquals "customization_patch" "" }}' = "true" ];
+                then
+                  CUSTOMIZATION='{{repl ConfigOptionData "customization_patch" | Base64Encode }}'
+                  echo "Gitpod: Applying customization patch ${CUSTOMIZATION}"
+
+                  # Apply the customization property - if something else is set, this will be ignored
+                  yq e -i ".customization = $(echo "${CUSTOMIZATION}" | base64 -d | yq e -o json '.customization' - | jq -rc) // []" "${CONFIG_FILE}"
+                fi
+              fi
+
               echo "Gitpod: Patch Gitpod config"
               base64 -d "${CONFIG_PATCH_FILE}" > /tmp/patch.yaml
               config_patch=$(cat /tmp/patch.yaml)

install/kots/manifests/kots-config.yaml

@@ -379,6 +379,21 @@ spec:
           default: "0"
           help_text: Enables additional customization options. Enable only when you know what you are doing!
 
+        - name: customization_patch
+          title: Gitpod customization patch (YAML file)
+          type: file
+          required: false
+          when: '{{repl ConfigOptionEquals "advanced_mode_enabled" "1" }}'
+          help_text: |
+            A file configured to override annotations, labels and environment variables in components. See our
+            [advanced documentation](https://www.gitpod.io/docs/self-hosted/latest/advanced/customization) for
+            more details and the format.
+
+            Labels are an immutable property in Kubernetes, so you may need to uninstall your Gitpod instance
+            before applying - run `helm uninstall -n {{repl Namespace }} gitpod`.
+
+            **WARNING** this should not be run if using in-cluster database and/or object storage.
+
         - name: config_patch
           title: Gitpod config patch (YAML file)
           type: file