fix: corrected the installation line

.dockerignore

@@ -1,2 +1,6 @@
+.git
+.gitignore
 .env
+README.md
+compose.yaml
 .vscode

DOCKERFILE

@@ -15,10 +15,7 @@ WORKDIR /downdetector
 # Update and install dependencies
 RUN apt update && \
     apt upgrade -y && \
-    bash \
+    apt install -y bash curl vim cron
-    curl \
-    vim \
-    cron
 
 # Copy files
 COPY isalive.sh .