feat: use json format logs for admin frontend

admin_frontend/Dockerfile

@@ -1,6 +1,6 @@
 # User should build from parent directory
 
-FROM lukemathwalker/cargo-chef:latest-rust-1.72.1 as chef
+FROM lukemathwalker/cargo-chef:latest-rust-1 as chef
 
 WORKDIR /app
 RUN apt update && apt install lld clang -y
@@ -29,14 +29,9 @@ RUN cargo build --release --bin admin_frontend
 
 FROM debian AS runtime
 WORKDIR /app
-RUN apt-get update -y \
-    && apt-get install -y --no-install-recommends libc6 libssl-dev \
-    # Clean up
-    && apt-get autoremove -y \
-    && apt-get clean -y \
-    && rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /app/target/release/admin_frontend /usr/local/bin/admin_frontend
 COPY --from=builder /app/admin_frontend/assets /app/assets
 ENV RUST_BACKTRACE 1
+ENV RUST_LOG INFO
 CMD ["admin_frontend"]

admin_frontend/src/main.rs

@@ -20,7 +20,7 @@ async fn main() {
   dotenv::dotenv().ok();
 
   // set up tracing
-  tracing_subscriber::fmt()
+  tracing_subscriber::fmt().json()
     .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
     .init();