gnupg for gpg key management and gpg instead of apt-get

Dockerfile

@@ -2,12 +2,13 @@
 FROM continuumio/miniconda3
 
 # Update packages and install necessary utilities
-RUN apt-get update && apt-get install -y nano unzip curl
+RUN apt-get update && apt-get install -y \
+    nano unzip curl gnupg software-properties-common
 
-# Install gcloud CLI - Necessary for interacting with GCP
-RUN curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
-RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.cloud.google.com/apt cloud-sdk main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
-RUN apt-get update && apt-get install -y google-cloud-sdk
+# Install gcloud CLI (Google Cloud SDK)
+RUN curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | gpg --dearmor -o /usr/share/keyrings/cloud.google.gpg \
+    && echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.cloud.google.com/apt cloud-sdk main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list \
+    && apt-get update && apt-get install -y google-cloud-sdk
 
 # Create a non-root user (Hugging Face requirement)
 RUN useradd -m -u 1000 user