added build script

Author: krokicki

build.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -euo pipefail
+
+readonly path="$1"
+readonly container=$(echo $path | cut -d '/' -f 1)
+readonly version=$(echo $path | cut -d '/' -f 2)
+
+now="$(date --utc --iso-8601=seconds)"
+repo_url="https://github.com/BioImageTools/containers"
+tag="ghcr.io/bioimagetools/$container:$version"
+
+docker build \
+    --label org.opencontainers.image.source="$repo_url" \
+    --label org.opencontainers.image.created="$now" \
+    --tag $tag \
+    ./$container/$version
+
+read -r -p "Do you want to push this image to GCR? [y/N] " response
+case "$response" in
+    [yY][eE][sS]|[yY])
+        docker push $tag
+        ;;
+    *)
+        echo "You can push it later like this: docker push $tag"
+        ;;
+esac
+