replacec echo by exports

Dockerfile

@@ -22,12 +22,11 @@ RUN --mount=type=secret,id=MODEL_NAME,mode=0444 \
     --mount=type=secret,id=MONGODB_URL,mode=0444 \
     --mount=type=secret,id=APP_COLOR,mode=0444 \
     --mount=type=secret,id=APP_NAME,mode=0444 \
-    MODEL_NAME=$(cat /run/secrets/MODEL_NAME 2> /dev/null | grep '^' || cat /defaults/MODEL_NAME) && echo "$MODEL_NAME" \
-    && MODEL_PARAMS=$(cat /run/secrets/MODEL_PARAMS 2> /dev/null | grep '^' ||cat  /defaults/MODEL_PARAMS) && echo "$MODEL_PARAMS" \
-    && MONGODB_URL=$(cat /run/secrets/MONGODB_URL 2> /dev/null | grep '^' || cat /defaults/MONGODB_URL) && echo "$MONGODB_URL" \
-    && APP_COLOR=$(cat /run/secrets/APP_COLOR 2> /dev/null | grep '^' || cat /defaults/APP_COLOR) && echo "$APP_COLOR" \
-    && APP_NAME=$(cat /run/secrets/APP_NAME 2> /dev/null | grep '^' || cat /defaults/APP_NAME) && echo "$APP_NAME" \
-    && echo "vars hello" \ 
+    MODEL_NAME=$(cat /run/secrets/MODEL_NAME 2> /dev/null | grep '^' || cat /defaults/MODEL_NAME) && export MODEL_NAME \
+    && MODEL_PARAMS=$(cat /run/secrets/MODEL_PARAMS 2> /dev/null | grep '^' ||cat  /defaults/MODEL_PARAMS) && export MODEL_PARAMS \
+    && MONGODB_URL=$(cat /run/secrets/MONGODB_URL 2> /dev/null | grep '^' || cat /defaults/MONGODB_URL) && export MONGODB_URL \
+    && APP_COLOR=$(cat /run/secrets/APP_COLOR 2> /dev/null | grep '^' || cat /defaults/APP_COLOR) && export APP_COLOR \
+    && APP_NAME=$(cat /run/secrets/APP_NAME 2> /dev/null | grep '^' || cat /defaults/APP_NAME) && export APP_NAME \
     && envsubst < ".template.env.local" > ".env.local"