* add automated build of ploigos-tool-openscap on centos

* add automated build of ploigos-tool-containers on ubi8 now that podman and buildah are in ubi-8-appstream
* ploigos-tool-rekor was installing maven due to copy paste issue
* externalize determine-image-version.sh from publish github workflow to reduce copy paste speggetti
* standerdize LABEL section on all Containerfiles
* general cleanup of Containerfiles
* remove manual-publish.sh script no longer needed
* cleanup and update readme

.github/scripts/determine-image-version.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+IMAGE_REPOSITORY=${REGISTRY_URI}/${REGISTRY_REPOSITORY}/${IMAGE_NAME}
+
+# determine version
+# if scheduled build then version is 'nightly'
+# else if REF is a tag then version is tag
+# else if REF is the default branch then version is 'edge
+# else if REF is pull request then version is pull request event number
+VERSION=noop
+if [ "${GITHUB_EVENT_NAME}" == "schedule" ]; then
+    VERSION=nightly
+elif [[ ${GITHUB_REF} == refs/tags/* ]]; then
+    VERSION=${GITHUB_REF#refs/tags/}
+elif [[ ${GITHUB_REF} == refs/heads/* ]]; then
+    VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+    if [ "${GITHUB_EVENT_REPOSITORY_DEFAULT_BRANCH}" = "$VERSION" ]; then
+        VERSION=edge
+    fi
+elif [[ ${GITHUB_REF} == refs/pull/* ]]; then
+    VERSION=pr-${GITHUB_EVENT_NUMBER}
+fi
+VERSION="${VERSION}"
+TAGS="${IMAGE_REPOSITORY}:${VERSION}"
+
+# if version is vMAJOR.MINOR.MICRO then also tag with vMAJOR and vMAJOR.MINOR
+if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+    MINOR=${VERSION%.*}
+    MAJOR=${MINOR%.*}
+    TAGS="${TAGS},${IMAGE_REPOSITORY}:${MINOR},${IMAGE_REPOSITORY}:${MAJOR},${IMAGE_REPOSITORY}:latest"
+fi
+
+# add sha tag if not a pull request
+if [[ ${GITHUB_REF} != refs/pull/* ]]; then
+    TAGS="${TAGS},${IMAGE_REPOSITORY}:sha-${GITHUB_SHA::12}"
+fi
+
+# if a flavor is provided then iterate each tag and add the flavor to it
+# if IMAGE_IS_DEFAULT_FLAVOR is also true, then also use the unflavored tags
+if [[ ${IMAGE_TAG_FLAVOR} ]] ; then
+    original_tags=$TAGS
+    TAGS=""
+
+    for original_tag in $(echo $original_tags | sed "s/,/ /g")
+    do
+        if [[ ${IMAGE_IS_DEFAULT_FLAVOR} =~ true|True|t|T|yes|Yes|y|Y ]]; then
+            new_tags="${original_tag},${original_tag}${IMAGE_TAG_FLAVOR}"
+        else
+            new_tags="${original_tag}${IMAGE_TAG_FLAVOR}"
+        fi
+
+        if [[ ${TAGS} ]]; then
+            TAGS="${TAGS},${new_tags}"
+        else
+            TAGS="${new_tags}"
+        fi
+    done
+fi
+
+# set output for future github action steps
+echo ::set-output name=version::${VERSION}${IMAGE_TAG_FLAVOR}
+echo ::set-output name=tags::${TAGS}
+echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')