From 6cebd03d7ffa06fbe5a29c722bbbd1ccb3e0801d Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Mon, 7 Jul 2025 14:16:55 -0500
Subject: [PATCH] fix parser version check

---
 Dockerfile                    |  4 ++--
 lib/aprsme/dependency_info.ex | 21 ++++++++++++++++++---
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 3956956..0f49a12 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -67,8 +67,8 @@ RUN date -u +"%Y-%m-%dT%H:%M:%SZ" > /app/deployed_at.txt
 # Copy parser hash from builder stage
 COPY --from=builder /tmp/parser_hash.txt /app/parser_hash.txt
 
-# Set parser git hash environment variable for runtime
-ENV PARSER_GIT_HASH=$(cat /app/parser_hash.txt)
+# Set default parser git hash environment variable
+ENV PARSER_GIT_HASH="unknown"
 
 # Copy release from builder
 COPY --from=builder --chown=nobody:root /app/release ./
diff --git a/lib/aprsme/dependency_info.ex b/lib/aprsme/dependency_info.ex
index 9b7874b..e61668a 100644
--- a/lib/aprsme/dependency_info.ex
+++ b/lib/aprsme/dependency_info.ex
@@ -55,9 +55,24 @@ defmodule Aprsme.DependencyInfo do
   # Get static parser hash at compile time
   defp get_static_parser_hash do
     case System.get_env("PARSER_GIT_HASH") do
-      nil -> "unknown"
-      "unknown" -> "unknown"
-      hash -> hash
+      nil ->
+        "unknown"
+
+      "unknown" ->
+        # Try to read from the file copied during build
+        hash_file = Path.join(["/app", "parser_hash.txt"])
+
+        if File.exists?(hash_file) do
+          case File.read(hash_file) do
+            {:ok, hash} -> String.trim(hash)
+            _ -> "unknown"
+          end
+        else
+          "unknown"
+        end
+
+      hash ->
+        hash
     end
   end
 end