From 9f57df49924fc13d344b96267f524d68f1e9d452 Mon Sep 17 00:00:00 2001
From: Vijay Soni <vs4vijay@gmail.com>
Date: Sun, 6 Oct 2024 23:52:11 +0530
Subject: [PATCH] Add base path support for Next.js frontend

Add support for deploying the homepage container at a specified URL path, passed as an environment variable.
---
 Dockerfile           | 3 ++-
 docker-entrypoint.sh | 3 +++
 next.config.js       | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)
 mode change 100755 => 100644 docker-entrypoint.sh

diff --git a/Dockerfile b/Dockerfile
index 3e6de756..820385cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,6 +23,7 @@ WORKDIR /app
 ARG BUILDTIME
 ARG VERSION
 ARG REVISION
+ARG NEXT_PUBLIC_BASE_PATH
 
 COPY --link --from=deps /app/node_modules ./node_modules/
 COPY . .
@@ -30,7 +31,7 @@ COPY . .
 SHELL ["/bin/ash", "-xeo", "pipefail", "-c"]
 RUN npm run telemetry \
  && mkdir config \
- && NEXT_PUBLIC_BUILDTIME=$BUILDTIME NEXT_PUBLIC_VERSION=$VERSION NEXT_PUBLIC_REVISION=$REVISION npm run build
+ && NEXT_PUBLIC_BUILDTIME=$BUILDTIME NEXT_PUBLIC_VERSION=$VERSION NEXT_PUBLIC_REVISION=$REVISION NEXT_PUBLIC_BASE_PATH=$NEXT_PUBLIC_BASE_PATH npm run build
 
 # Production image, copy all the files and run next
 FROM docker.io/node:18-alpine AS runner
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
old mode 100755
new mode 100644
index c2858808..ea27aedb
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -12,6 +12,9 @@ export PGID=${PGID:-0}
 
 export HOMEPAGE_BUILDTIME=$(date +%s)
 
+# Set the base path for the Next.js application
+export NEXT_PUBLIC_BASE_PATH=${NEXT_PUBLIC_BASE_PATH:-""}
+
 # Set privileges for /app but only if pid 1 user is root and we are dropping privileges.
 # If container is run as an unprivileged user, it means owner already handled ownership setup on their own.
 # Running chown in that case (as non-root) will cause error
diff --git a/next.config.js b/next.config.js
index d0395611..573a6586 100644
--- a/next.config.js
+++ b/next.config.js
@@ -9,6 +9,7 @@ const nextConfig = {
     unoptimized: true,
   },
   i18n,
+  basePath: process.env.NEXT_PUBLIC_BASE_PATH || '',
 };
 
 module.exports = nextConfig;