feat: Add publish script for building/publishing container images SQUASH

shared/bin/publish.sh

@@ -87,6 +87,20 @@ while getopts hva:n:o:r:-: OPT; do
 done
 shift $((OPTIND - 1))
 
+# Check dependencies, and abort if any are missing
+for c in docker jq; do
+   if ! which "$c" &>/dev/null; then
+      echo "${red}The $ul$c$rmul command is required by this script. Aborting.$norm" >&2
+      exit 1
+   fi
+done
+
+# Only run if "docker" is answering as Docker, not something else like podman
+if [[ $(docker --version) != Docker* ]]; then
+   echo "${red}This script will only build with ${ul}Docker$rmul. Aborting.$norm" >&2
+   exit 1
+fi
+
 # Repo package info
 name=$(jq -r '.name' "$context/package.json" | tr -d ' ')
 ver=$(jq -r '.version' "$context/package.json")