add runtime test capability

.github/workflows/buiild.yml

@@ -1,4 +1,4 @@
-name: Build and publish image to ghcr.io/epics-containers
+name: Check that ibek-support support modules will build in a container
 
 on:
   push:
@@ -45,6 +45,10 @@ jobs:
         if: runner.os == 'macos'
         uses: docker-practice/actions-setup-docker@fd7ecdac7caf8e2c541a48c9bcc280aae59a8461
 
+      # Dockerfiles expect the repo to be in a subdirectory as its normally a submodule
+      - name: Move Repo
+        run: mkdir ./.submodule; mv ./* ./.submodule
+
       - name: Log in to GitHub Docker Registry
         uses: docker/login-action@v1
         with:
@@ -57,4 +61,4 @@ jobs:
           ARCH: ${{ matrix.architecture }}
           PLATFORM: ${{ matrix.platform }}
           CACHE: ${{ env.CACHE }}
-        run: tests/_test_support_build.sh
+        run: .submodule/tests/_test_support_build.sh

tests/Verify.asyn.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo "HELLO WORLD"

tests/Verify.busy.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo TODO add tests for busy support module

tests/_test_support_build.sh

@@ -14,13 +14,39 @@
 #   CACHE: the directory to use for caching
 #   PLATFORM: the platform to build for (linux/amd64 or linux/arm64)
 
-THIS_FOLDER=$(dirname $(readlink -f $0))
+set -xe
+
+# this script can be run locally but only if it is run as a submodule of
+# and ioc-xxx generic IOC repository. This is because the Docker Context
+# is the parent folder of the ibek-support folder and might cause trouble
+# if run from elsewhere.
+
+function is_on_github_actions {
+    if [[ "$CI" == "" || "$GITHUB_RUN_ID" == "" ]] ; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+if is_on_github_actions ; then
+    echo "running on github where we explicitly move the repo to a subfolder"
+else
+    if [[ -f .git && $(grep .git/modules/ibek-support .git) != ""  ]] ; then
+        echo "running locally as a submodule"
+    else
+        echo "ERROR: this script must be run as a submodule of an ioc-xxx repository"
+        exit 1
+    fi
+fi
+
+
+THIS_FOLDER=$(dirname ${0})
 # ibek-support is normally a submodule of the Docker Context so we need to
 # pass the container context as the folder above the ibek-support folder
+mkdir -p ${THIS_FOLDER}/my_context
 CONTEXT=$(realpath ${THIS_FOLDER}/../..)
 
-set -xe
-
 BASE_VERSION="23.9.2"
 
 ARCH=${ARCH:-linux}
@@ -61,7 +87,7 @@ do_build() {
         --build-arg BASE=${BASE_VERSION}
         --build-arg REGISTRY=ghcr.io/epics-containers
         --target ${TARGET}
-        --layers
+        --load
         -t test_image_only
         -f ${DOCKERFILE}
     "
@@ -100,8 +126,12 @@ for dockerfile in ${THIS_FOLDER}/Dockerfile*; do
     # The above check is sufficient to show that the generic IOC will load and
     # run and that all the necessary runtime libraries are in place.
     #
-    # for more detailed testing add a Verify.xxx script where xxx is the
+    # for more detailed testing add a Verify.xxx.sh script where xxx is the
     # the same as the suffix on the Dockerfile. See Verify.asyn for an example.
+    VERIFY=Verify."${dockerfile#*.}"
+    if [[ -f ${THIS_FOLDER}/${VERIFY} ]] ; then
+        $THIS_FOLDER/${VERIFY} test_me
+    fi
 
     $docker stop -t0 test_me