diff --git a/.gitignore b/.gitignore
index f8a3aa0..f6473b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,10 @@
 .idea
 *.iml
-
-config.json
 .vscode
 .DS_Store
+
+config.json
+config.working.json
+
+jobs/
+projects/
diff --git a/docker-entrypoint b/docker-entrypoint
index 272f182..dd8ada5 100755
--- a/docker-entrypoint
+++ b/docker-entrypoint
@@ -16,7 +16,7 @@ fi
 mkdir -p "${HOME_DIR}"/jobs "${HOME_DIR}"/projects
 
 if [ -z "${DOCKER_HOST}" ] && [ -a "${DOCKER_PORT_2375_TCP}" ]; then
-    export DOCKER_HOST='tcp://docker:2375'
+    export DOCKER_HOST="tcp://docker:2375"
 fi
 
 if [ "${LOG_FILE}" == "" ]; then
@@ -37,7 +37,7 @@ normalize_config() {
     elif [ -f "${HOME_DIR}/config.yaml" ]; then
         JSON_CONFIG="$(rq -y <<< "$(cat "${HOME_DIR}"/config.yaml)")"
     fi
-    jq -r 'map(.)' <<< "${JSON_CONFIG}" > "${HOME_DIR}"/config.working.json
+    jq -r 'to_entries | map_values(.value + { name: .key })' <<< "${JSON_CONFIG}" > "${HOME_DIR}"/config.working.json
 }
 
 ensure_docker_socket_accessible() {
@@ -67,19 +67,19 @@ slugify() {
 
 make_image_cmd() {
     DOCKERARGS=$(echo "${1}" | jq -r .dockerargs)
-    VOLUMES=$(echo "${1}" | jq -r '.volumes | map(" -v " + .) | join("")')
-    PORTS=$(echo "${1}" | jq -r '.ports | map(" -p " + .) | join("")')
-    EXPOSE=$(echo "${1}" | jq -r '.expose | map(" --expose " + .) | join("")')
+    if [ "${DOCKERARGS}" == "null" ]; then DOCKERARGS=; fi
+    VOLUMES=$(echo "${1}" | jq -r 'select(.volumes != null) | .volumes | map(" -v " + .) | join("")')
+    PORTS=$(echo "${1}" | jq -r 'select(.ports != null) | .ports | map(" -p " + .) | join("")')
+    EXPOSE=$(echo "${1}" | jq -r 'select(.expose != null) | .expose | map(" --expose " + .) | join("")')
     NAME=$(echo "${1}" | jq -r 'select(.name != null) | .name')
     NETWORK=$(echo "${1}" | jq -r 'select(.network != null) | .network')
-    ENVIRONMENT=$(echo "${1}" | jq -r '.environment | map(" -e " + .) | join("")')
-    if [ "${DOCKERARGS}" == "null" ]; then DOCKERARGS=; fi
-    if [ -n "${NAME}" ]; then DOCKERARGS="${DOCKERARGS} --rm --name ${NAME} "; fi
-    if [ -n "${NETWORK}" ]; then DOCKERARGS="${DOCKERARGS} --network ${NETWORK} "; fi
-    if [ -n "${VOLUMES}" ]; then DOCKERARGS="${DOCKERARGS}${VOLUMES}"; fi
-    if [ -n "${ENVIRONMENT}" ]; then DOCKERARGS="${DOCKERARGS}${ENVIRONMENT}"; fi
-    if [ -n "${PORTS}" ]; then DOCKERARGS="${DOCKERARGS}${PORTS}"; fi
-    if [ -n "${EXPOSE}" ]; then DOCKERARGS="${DOCKERARGS}${EXPOSE}"; fi
+    ENVIRONMENT=$(echo "${1}" | jq -r 'select(.environment != null) | .environment | map(" -e " + .) | join("")')
+    if [ -n "${NAME}" ]; then DOCKERARGS+=" --rm --name ${NAME} "; fi
+    if [ -n "${NETWORK}" ]; then DOCKERARGS+=" --network ${NETWORK} "; fi
+    if [ -n "${VOLUMES}" ]; then DOCKERARGS+="${VOLUMES}"; fi
+    if [ -n "${ENVIRONMENT}" ]; then DOCKERARGS+="${ENVIRONMENT}"; fi
+    if [ -n "${PORTS}" ]; then DOCKERARGS+="${PORTS}"; fi
+    if [ -n "${EXPOSE}" ]; then DOCKERARGS+="${EXPOSE}"; fi
     IMAGE=$(echo "${1}" | jq -r .image | envsubst)
     TMP_COMMAND=$(echo "${1}" | jq -r .command)
     echo "docker run ${DOCKERARGS} ${IMAGE} ${TMP_COMMAND}"
@@ -104,8 +104,8 @@ cat << EOF > "${HOME_DIR}"/projects/"${SCRIPT_NAME}".sh
 set -e
 
 CONTAINERS=\$(docker ps --format '{{.Names}}' | grep -E "^${PROJECT}_${CONTAINER}.[0-9]+")
-for CONTAINER_NAME in \$CONTAINERS; do
-    docker exec ${DOCKERARGS} \${CONTAINER_NAME} ${TMP_COMMAND}
+for CONTAINER_NAME in \${CONTAINERS}; do
+    docker exec "${DOCKERARGS} \${CONTAINER_NAME} ${TMP_COMMAND}"
 done
 EOF
         echo "/bin/bash ${HOME_DIR}/projects/${SCRIPT_NAME}.sh"
@@ -186,23 +186,26 @@ function build_crontab() {
 
     ONSTART=()
     while read -r i ; do
-
         SCHEDULE=$(jq -r .["$i"].schedule "${CONFIG}" | sed 's/\*/\\*/g')
         if [ "${SCHEDULE}" == "null" ]; then
-            echo "Schedule Missing: $(jq -r .["$i"].schedule "${CONFIG}")"
+            echo "'schedule' missing: $(jq -r .["$i"].schedule "${CONFIG}")"
             continue
         fi
         SCHEDULE=$(parse_schedule "${SCHEDULE}" | sed 's/\\//g')
 
         COMMAND=$(jq -r .["$i"].command "${CONFIG}")
         if [ "${COMMAND}" == "null" ]; then
-            echo "Command Missing: '${COMMAND}'"
+            echo "'command' missing: '${COMMAND}'"
             continue
         fi
 
         COMMENT=$(jq -r .["$i"].comment "${CONFIG}")
         if [ "${COMMENT}" != "null" ]; then
-            echo "# ${COMMENT}" >> ${CRONTAB_FILE}
+            COMMENT=" ${COMMENT}"
+            echo "#${COMMENT}" >> ${CRONTAB_FILE}
+        else
+            # Reset COMMENT to empty rather than keep the 'null' value.
+            COMMENT=" "
         fi
 
         SCRIPT_NAME=$(jq -r .["$i"].name "${CONFIG}")
@@ -216,8 +219,7 @@ cat << EOF > "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
 #!/usr/bin/env bash
 set -e
 
-echo "Start Cronjob **${SCRIPT_NAME}** ${COMMENT}"
-
+echo "start cron job **${SCRIPT_NAME}**${COMMENT}"
 $(make_cmd "$(jq -c .["$i"] "${CONFIG}")")
 EOF
         TRIGGER=$(jq -r .["$i"].trigger "${CONFIG}")
@@ -225,14 +227,14 @@ EOF
             while read -r j ; do
                 TRIGGER_COMMAND=$(jq .["$i"].trigger["$j"].command "${CONFIG}")
                 if [ "${TRIGGER_COMMAND}" == "null" ]; then
-                    echo "Command Missing: '${TRIGGER_COMMAND}'"
+                    echo "'command' missing: '${TRIGGER_COMMAND}'"
                     continue
                 fi
                 make_cmd "${TRIGGER_COMMAND}" >> "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
             done < <(jq -r '.['"$i"'].trigger|keys[]' "${CONFIG}")
         fi
 
-        echo "echo \"End Cronjob **${SCRIPT_NAME}** ${COMMENT}\"" >> "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
+        echo "echo \"end cron job **${SCRIPT_NAME}**${COMMENT}\"" >> "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
 
         echo "${SCHEDULE} ${COMMAND}" >> ${CRONTAB_FILE}
 
@@ -255,7 +257,7 @@ start_app() {
     normalize_config
     export CONFIG=${HOME_DIR}/config.working.json
     if [ ! -f "${CONFIG}" ]; then
-        echo "Unable to find ${CONFIG}."
+        echo "generated ${CONFIG} missing."
         exit 1
     fi
     if [ "${1}" == "crond" ]; then