fix build script for CircleCI

.bumpversion.cfg

@@ -11,4 +11,3 @@ search = <version>{current_version}</version><!-- BUMP_VERSION -->
 replace = <version>{new_version}</version><!-- BUMP_VERSION -->
 
 [bumpversion:file:hbp.yml]
-

build.sh

 #!/usr/bin/env bash
-set -e
+
+set -o pipefail  # trace ERR through pipes
+set -o errtrace  # trace ERR through 'time command' and other functions
+set -o errexit   ## set -e : exit the script if any statement returns a non-true return value
 
 get_script_dir () {
      SOURCE="${BASH_SOURCE[0]}"
@@ -13,19 +16,17 @@ get_script_dir () {
      pwd
 }
 
-if pgrep -lf sshuttle > /dev/null ; then
-  echo "sshuttle detected. Please close this program as it messes with networking and prevents builds inside Docker to work"
-  exit 1
-fi
+cd "$(get_script_dir)"
 
-if groups $USER | grep &>/dev/null '\bdocker\b'; then
+if [[ $NO_SUDO || -n "$CIRCLECI" ]]; then
+  CAPTAIN="captain"
+elif groups $USER | grep &>/dev/null '\bdocker\b'; then
   CAPTAIN="captain"
 else
   CAPTAIN="sudo captain"
 fi
 
-BUILD_DATE=$(date --iso-8601=seconds) \
+BUILD_DATE=$(date -Iseconds) \
   VCS_REF=$(git describe --tags --dirty) \
   VERSION=$(git describe --tags --dirty) \
-  WORKSPACE=$(get_script_dir) \
   $CAPTAIN build