diff --git a/Dockerfile b/Dockerfile
index deb5bd532..391372c85 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,6 +35,10 @@ ENV NEXT_PUBLIC_BUILD_REF_NAME=${NEXT_PUBLIC_BUILD_REF_NAME}
 ARG NEXT_PUBLIC_GA4_MEASUREMENT_ID
 ENV NEXT_PUBLIC_GA4_MEASUREMENT_ID=${NEXT_PUBLIC_GA4_MEASUREMENT_ID}
 
+# Optional argument to configure PostHog at build time (see: docs/deploy-analytics.md)
+ARG NEXT_PUBLIC_POSTHOG_KEY
+ENV NEXT_PUBLIC_POSTHOG_KEY=${NEXT_PUBLIC_POSTHOG_KEY}
+
 # Copy development deps and source
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
diff --git a/next.config.mjs b/next.config.mjs
index 1d26de7ac..abeafbeb9 100644
--- a/next.config.mjs
+++ b/next.config.mjs
@@ -11,6 +11,7 @@ try {
   // final fallback
   buildHash = '2-dev';
 }
+// The following are used by/available to Release.buildInfo(...)
 process.env.NEXT_PUBLIC_BUILD_HASH = (buildHash || '').slice(0, 10);
 process.env.NEXT_PUBLIC_BUILD_PKGVER = JSON.parse('' + await readFile(new URL('./package.json', import.meta.url))).version;
 process.env.NEXT_PUBLIC_BUILD_TIMESTAMP = new Date().toISOString();
diff --git a/src/common/components/3rdparty/GoogleAnalytics.tsx b/src/common/components/3rdparty/GoogleAnalytics.tsx
index 9f14588eb..18de60bfd 100644
--- a/src/common/components/3rdparty/GoogleAnalytics.tsx
+++ b/src/common/components/3rdparty/GoogleAnalytics.tsx
@@ -53,6 +53,8 @@ function NextGoogleAnalytics(props: {
   if (currDataLayerName === undefined)
     currDataLayerName = 'dataLayer';
 
+  const fBuild = Release.buildInfo('frontend');
+
   return (
     <>
       <Script
@@ -66,10 +68,10 @@ function NextGoogleAnalytics(props: {
           gtag('config', '${gaId}', {
             ${debugMode ? ' \'debug_mode\': true,' : ''}
             'user_properties': {
-              'app_tenant': '${Release.TenantSlug || 'unknown'}',
-              'app_build_hash': '${process.env.NEXT_PUBLIC_BUILD_HASH || 'unknown'}',
-              'app_pkg_version': '${process.env.NEXT_PUBLIC_BUILD_PKGVER || 'unknown'}',
-              'app_deployment_type': '${process.env.NEXT_PUBLIC_DEPLOYMENT_TYPE || 'unknown'}'
+              'app_tenant': '${Release.TenantSlug}',
+              'app_build_hash': '${fBuild.gitSha || 'unknown'}',
+              'app_pkg_version': '${fBuild.pkgVersion || 'unknown'}',
+              'app_deployment_type': '${fBuild.deploymentType || 'unknown'}'
             }
           });`,
         }}
diff --git a/src/common/components/3rdparty/PostHogAnalytics.tsx b/src/common/components/3rdparty/PostHogAnalytics.tsx
index 83be4ca24..4ca50285c 100644
--- a/src/common/components/3rdparty/PostHogAnalytics.tsx
+++ b/src/common/components/3rdparty/PostHogAnalytics.tsx
@@ -79,11 +79,12 @@ export function OptionalPostHogAnalytics() {
     });
 
     // add deployment context - see `next.config.mjs`
+    const fBuild = Release.buildInfo('frontend');
     posthog.register({
       app_tenant: Release.TenantSlug,
-      app_build_hash: process.env.NEXT_PUBLIC_BUILD_HASH || 'unknown',
-      app_pkg_version: process.env.NEXT_PUBLIC_BUILD_PKGVER || 'unknown',
-      app_deployment_type: process.env.NEXT_PUBLIC_DEPLOYMENT_TYPE || 'unknown',
+      app_build_hash: fBuild.gitSha || 'unknown',
+      app_pkg_version: fBuild.pkgVersion || 'unknown',
+      app_deployment_type: fBuild.deploymentType || 'unknown',
     });
 
     _isPostHogInitialized = true;