Fix issue where docker build would rebuild when app did not change

.dockerignore

@@ -2,3 +2,12 @@ node_modules
 android
 ios
 build
+
+# Git
+.git
+.gitignore
+
+# Env files (use build args instead; .env.template is copied for defaults)
+.env
+.env.local
+.env.*.local

Dockerfile

@@ -1,3 +1,6 @@
+# Pass the build hash as an argument:
+# docker build --build-arg VITE_BUILD_HASH=$(git rev-parse --short HEAD) -t flotilla .
+
 FROM node:20-slim
 
 # Install pnpm
@@ -15,6 +18,9 @@ RUN pnpm i
 # Copy the rest of the application
 COPY . .
 
+ARG VITE_BUILD_HASH
+ENV VITE_BUILD_HASH=${VITE_BUILD_HASH}
+
 # Build the application
 ENV NODE_OPTIONS=--max_old_space_size=16384
 RUN pnpm run build