b/517810218 Add manifest to allow installing as PWA

sources/pom.xml

@@ -24,7 +24,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.solutions</groupId>
   <artifactId>jitaccess</artifactId>
-  <version>2.3.0</version>
+  <version>2.3.1</version>
   <properties>
     <surefire-plugin.version>3.5.5</surefire-plugin.version>
     <surefire-plugin.version>3.5.5</surefire-plugin.version>

sources/src/main/java/com/google/solutions/jitaccess/web/ApplicationConfiguration.java

@@ -190,7 +190,7 @@ public ApplicationConfiguration(@NotNull Map<String, String> settingsData) {
       .map(CustomerId::new)
       .orElseThrow(() -> new IllegalStateException(
         "The environment variable 'CUSTOMER_ID' must contain the customer ID " +
-          "of a Cloud Identity or Workspace account, see" +
+          "of a Cloud Identity or Workspace account, see " +
           "https://support.google.com/a/answer/10070793"));
     this.primaryDomain = readStringSetting("PRIMARY_DOMAIN")
       .map(d -> new Domain(d, Domain.Type.PRIMARY))

sources/src/main/resources/META-INF/resources/index.html

@@ -6,6 +6,8 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
     <meta name="referrer" content="no-referrer" />
+    <meta name="theme-color" content="#006CBE" />
+    <link rel="manifest" href="manifest.json" />
 
     <title>JIT Groups</title>
 

sources/src/main/resources/META-INF/resources/manifest.json

@@ -0,0 +1,31 @@
+{
+  "name": "JIT Groups",
+  "short_name": "JIT Groups",
+  "start_url": "/",
+  "display": "minimal-ui",
+  "background_color": "#ffffff",
+  "theme_color": "#006CBE",
+  "description": "Self-service access management for Google Cloud",
+  "icons": [
+    {
+      "src": "logo.png",
+      "sizes": "48x48",
+      "type": "image/png"
+    },
+    {
+      "src": "logo-144.png",
+      "sizes": "144x144",
+      "type": "image/png"
+    },
+    {
+      "src": "logo-192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "logo-512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ]
+}