ignore set -e at grep SLAPD_

[tetsuyainfra]

Because "set -e option in entrypoint.sh"
if env | grep SLAPD_ (don't set SLAPD_* env) returned an error, shell script stops.

• posix set -e
  http://pubs.opengroup.org/onlinepubs/007904975/utilities/set.html
• grep Exit-status
  https://www.gnu.org/software/grep/manual/grep.html#Exit-Status

// Reproduce commands
docker volume create --name etc_ldap
docker volume create --name var_ldap

// 1st execution 
docker run -d \
  -e SLAPD_PASSWORD=mysecretpassword  \
  -e SLAPD_DOMAIN=ldap.example.org    \
  -v etc_ldap:/etc/ldap               \
  -v var_ldap:/var/lib/ldap           \
  dinkel/openldap

// 2nd execution ends immediately
docker run -d \
  -v etc_ldap:/etc/ldap               \
  -v var_ldap:/var/lib/ldap           \
  dinkel/openldap
// OR 
docker run -it \
  -v etc_ldap:/etc/ldap               \
  -v var_ldap:/var/lib/ldap           \
  dinkel/openldap

[bersace]

Why not use bashism ? :)

$ echo ${!SSH_*}
SSH_AGENT_PID SSH_AUTH_SOCK