Updated Docker configs to use Air for auto-reloading

Dockerfile.dev

@@ -4,8 +4,14 @@ WORKDIR /app
 
 RUN apt install -y make gcc
 
+# Make sure /app is safe regardless of who owns it
+RUN git config --global --add safe.directory /app
+
 ENV CGO_ENABLED=1
 
+# Install Air for auto-reloading
+RUN go install github.com/air-verse/air@latest
+
 # Copy dependency definitions first (caching optimization)
 COPY go.mod go.sum ./
 RUN go mod download