can now optionally push to dockerhub

jupyter-images/shared/build.sh

@@ -1,28 +1,44 @@
 #!/bin/bash
 
-# Check if an image name is provided
+# Exit immediately if a command exits with a non-zero status
+set -e
+
+usage() {
+    echo "Usage: $0 <image-name> [--push]"
+    echo "  <image-name>  Name of the Docker image to build"
+    echo "  --push        Optionally push the Docker image to DockerHub"
+    exit 1
+}
+
 if [ -z "$1" ]; then
     echo "Error: No image name provided."
-    echo "Usage: $0 <image-name>"
-    exit 1
+    usage
 fi
 
 IMAGE_NAME=$1
+PUSH_IMAGE=false
+
+if [ "$2" == "--push" ]; then
+    PUSH_IMAGE=true
+fi
 
 DATE_TAG=$(date "+%Y%b%d_%H%M%S")
 RANDOM_HEX=$(openssl rand -hex 2)
 TAG="${DATE_TAG}_${RANDOM_HEX}"
-
 FULL_TAG="unidata/$IMAGE_NAME:$TAG"
 
+# Build the Docker image
 echo "Building Docker image with tag: $FULL_TAG"
-
 docker build --no-cache --pull --tag "$FULL_TAG" .
 
-# Check if the build was successful
-if [ $? -eq 0 ]; then
-    echo "Docker image built successfully: $FULL_TAG"
+echo "Docker image built successfully: $FULL_TAG"
+
+if $PUSH_IMAGE; then
+    echo "Pushing Docker image to DockerHub: $FULL_TAG"
+    docker push "$FULL_TAG"
+    echo "Docker image pushed successfully: $FULL_TAG"
 else
-    echo "Error: Docker build failed."
-    exit 1
+    echo "Skipping Docker image push. Use '--push' to push the image."
 fi
+
+exit 0