From a37c9810bfe3f04fe5b8b4247ba0ab7885a3dd75 Mon Sep 17 00:00:00 2001
From: Six <23470032+6ixfalls@users.noreply.github.com>
Date: Wed, 17 Jan 2024 00:00:21 -0800
Subject: [PATCH] fix: Pass env variables through app

---
 apps/client/Dockerfile |  9 ++---
 apps/client/env.sh     | 76 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+), 4 deletions(-)
 create mode 100644 apps/client/env.sh

diff --git a/apps/client/Dockerfile b/apps/client/Dockerfile
index f8682b82..a267d9b5 100644
--- a/apps/client/Dockerfile
+++ b/apps/client/Dockerfile
@@ -6,7 +6,8 @@
 FROM node:16.18.1 as builder
 
 WORKDIR /app
-COPY ./dist/apps/client ./yarn.lock ./prisma ./package.json ./
+COPY ./dist/apps/client ./yarn.lock ./prisma ./package.json ./apps/client/env.sh ./
+RUN chmod +x ./env.sh
 # Install dependencies
 RUN yarn install --production=false
 
@@ -15,10 +16,10 @@ RUN yarn install --production=false
 # ------------------------------------------ 
 FROM node:16.18.1-slim as prod
 
-# Used for container health checks
-RUN apt-get update && apt-get install curl -y
+# Used for container health checks and env handling
+RUN apt-get update && apt-get install curl gawk -y
 WORKDIR /app
 USER node 
 COPY --from=builder /app  .
 
-CMD ["npx", "next", "start"]
+CMD ["./env.sh", "npx", "next", "start"]
diff --git a/apps/client/env.sh b/apps/client/env.sh
new file mode 100644
index 00000000..daa7047b
--- /dev/null
+++ b/apps/client/env.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+# https://github.com/vercel/next.js/discussions/17641#discussioncomment-5919914
+
+# Config
+ENVSH_ENV="${ENVSH_ENV:-"./.env"}"
+ENVSH_PREFIX="${ENVSH_PREFIX:-"NEXT_PUBLIC_"}"
+ENVSH_PREFIX_STRIP="${ENVSH_PREFIX_STRIP:-true}"
+
+# Can be `window.__appenv = {` or `const APPENV = {` or whatever you want
+ENVSH_PREPEND="${ENVSH_PREPEND:-"window.__appenv = {"}"
+ENVSH_APPEND="${ENVSH_APPEND:-"}"}"
+ENVSH_OUTPUT="${ENVSH_OUTPUT:-"./public/__appenv.js"}"
+
+[ -f "$ENVSH_ENV" ] && INPUT="$ENVSH_ENV" || INPUT=/dev/null
+
+# Add assignment
+echo "$ENVSH_PREPEND" >"$ENVSH_OUTPUT"
+
+gawk -v PREFIX="$ENVSH_PREFIX" -v STRIP_PREFIX="$ENVSH_PREFIX_STRIP" '
+BEGIN {
+   OFS=": ";
+   FS="=";
+   PATTERN="^" PREFIX;
+
+   for (v in ENVIRON)
+      if (v ~ PATTERN)
+         vars[v] = ENVIRON[v]
+}
+
+$0 ~ PATTERN {
+   v = $2;
+
+   for (i = 3; i <= NF; i++)
+      v = v FS $i;
+
+   vars[$1] = (vars[$1] ? vars[$1] : v);
+}
+
+END {
+   for (v in vars) {
+      val = vars[v];
+      switch (val) {
+         case /^true$/:
+            break;
+
+         case /^false$/:
+            break;
+
+         case /^'"'.*'"'$/:
+            break;
+
+         case /^".*"$/:
+            break;
+
+         case /^[[:digit:]]+$/:
+            break;
+
+         default:
+            val = "\"" val "\"";
+            break;
+      }
+
+      val = val ","
+
+      if (STRIP_PREFIX == "true" || STRIP_PREFIX == "1")
+         v = gensub(PATTERN, "", 1, v)
+
+      print v, val;
+   }
+}
+' "$INPUT" >>"$ENVSH_OUTPUT"
+
+echo "$ENVSH_APPEND" >>"$ENVSH_OUTPUT"
+
+# Accepting commands (for Docker)
+exec "$@"
\ No newline at end of file