[FAB-16844] Correct BYFN CC name

Correct chaincode name regexp in byfn.sh so it is not restricted
to one named chaincode.

Signed-off-by: Matthew B White <whitemat@uk.ibm.com>

first-network/byfn.sh

@@ -90,7 +90,7 @@ function askProceed() {
 # Obtain CONTAINER_IDS and remove them
 # TODO Might want to make this optional - could clear other containers
 function clearContainers() {
- CONTAINER_IDS=$(docker ps -a | awk '($2 ~ /dev-peer.*.mycc.*/) {print $1}')
+ CONTAINER_IDS=$(docker ps -a | awk '($2 ~ /dev-peer.*/) {print $1}')
  if [ -z "$CONTAINER_IDS" -o "$CONTAINER_IDS" == " " ]; then
  echo "---- No containers available for deletion ----"
  else
@@ -102,7 +102,7 @@ function clearContainers() {
 # specifically the following images are often left behind:
 # TODO list generated image naming patterns
 function removeUnwantedImages() {
- DOCKER_IMAGE_IDS=$(docker images | awk '($1 ~ /dev-peer.*.mycc.*/) {print $3}')
+ DOCKER_IMAGE_IDS=$(docker images | awk '($1 ~ /dev-peer.*/) {print $3}')
  if [ -z "$DOCKER_IMAGE_IDS" -o "$DOCKER_IMAGE_IDS" == " " ]; then
  echo "---- No images available for deletion ----"
  else