Update build-and-shell.sh

Author: JOHNCARDOEN

scripts/build-and-shell.sh

@@ -1,14 +1,47 @@
 #!/bin/sh
 
+# Exit immediately if a command exits with a non-zero status (-e).
+# Treat unset variables as an error (-u).
+# Enable the use of "glob" characters in pathnames, but only if they match (-f).
 set -euf
 
-# Use Podman if installed, else use Docker
-if hash podman 2> /dev/null
-then
-  DOCKER_COMMAND=podman
+# --- Configuration ---
+IMAGE_NAME="aleph-sdk-python"
+DOCKERFILE_PATH="docker/python-3.9.dockerfile"
+CONTAINER_MOUNT_PATH="/opt/${IMAGE_NAME}"
+
+# --- Determine Container Runtime (Podman vs. Docker) ---
+
+# Use 'command -v' for a more portable and reliable check for the container runtime.
+if command -v podman > /dev/null 2>&1; then
+    DOCKER_COMMAND=podman
+    echo "INFO: Using Podman as the container runtime."
+elif command -v docker > /dev/null 2>&1; then
+    DOCKER_COMMAND=docker
+    echo "INFO: Using Docker as the container runtime."
 else
-  DOCKER_COMMAND=docker
+    echo "ERROR: Neither 'podman' nor 'docker' commands were found." >&2
+    exit 1
 fi
 
-$DOCKER_COMMAND build -t aleph-sdk-python -f docker/python-3.9.dockerfile .
-$DOCKER_COMMAND run -ti --rm --entrypoint /bin/bash -v "$(pwd)":/opt/aleph-sdk-python aleph-sdk-python
+# --- Build the Docker Image ---
+
+# Build the image using the determined command and specified Dockerfile path.
+# -t: Tags the image with the defined name.
+echo "INFO: Building image ${IMAGE_NAME} using ${DOCKERFILE_PATH}..."
+$DOCKER_COMMAND build -t "${IMAGE_NAME}" -f "${DOCKERFILE_PATH}" .
+
+# --- Run the Interactive Development Container ---
+
+# Run the container for interactive development.
+# -ti: Allocates a pseudo-TTY and keeps STDIN open (interactive).
+# --rm: Automatically remove the container when it exits.
+# --entrypoint /bin/bash: Overrides the default entrypoint to provide a shell prompt.
+# -v: Mounts the current working directory ($PWD) into the container for source access.
+echo "INFO: Running interactive container. Source code mounted at ${CONTAINER_MOUNT_PATH}."
+$DOCKER_COMMAND run \
+    -ti \
+    --rm \
+    --entrypoint /bin/bash \
+    -v "$(pwd)":"${CONTAINER_MOUNT_PATH}" \
+    "${IMAGE_NAME}"