fix: cargo really is ignoring PROFILE venv

Dockerfile

@@ -10,13 +10,17 @@ COPY ./Cargo.toml /lonk/Cargo.toml
 
 ARG PROFILE
 
-RUN cargo build
+RUN [ "${PROFILE}" = "debug" ] \
+        && cargo build \
+        || cargo build --release 
 RUN rm src/*.rs
 
 # Compile the source
 COPY ./src ./src
 RUN rm -f ./target/${PROFILE:-release}/deps/lonk*
-RUN cargo build
+RUN [ "${PROFILE}" = "debug" ] \
+        && cargo build \
+        || cargo build --release 
 
 # Execution container
 FROM rust:slim