Upgrading hardware from RPi (running fine) to NUC where installed Ubuntu 20.04.2 LTS (GNU/Linux 5.8.0-50-generic x86_64) + OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04) with Docker 20.10.2 and Portainer 1.24.2.
Managed to get all working even openhab container is “running” but http://localhost:8080 returns via Firefox on Ubuntu machine “unable to connect”.
See full log further below where it ends with:
++ echo gosu openhab tini -s ./start.sh
+ '[' 'gosu openhab tini -s ./start.sh' == 'gosu openhab tini -s ./start.sh' ']'
+ command=($@ server)
+ exec gosu openhab tini -s ./start.sh server
**[FATAL tini (24)] exec ./start.sh failed: No such file or directory**
Please find attached pictures of the portainer configuration where I have followed the instructions from the OH3 documentation.
Also I have seen a similar post at “not-able-to-start-a-new-installation-of-opernhab-on-synology-dsm-6-2-with-docker-and-portainer” but I could not derive a solution from here.
Can anyone assist? Feels I am almost there 
Full log:
+ echo 'Configuring Zulu JDK 11 unlimited strength cryptography policy...'
Configuring Zulu JDK 11 unlimited strength cryptography policy...
+ '[' 11 = 8 ']'
+ '[' 11 = 11 ']'
+ java_security_file=/usr/lib/jvm/default-jvm/conf/security/java.security
+ sed -i 's/^crypto.policy=limited/crypto.policy=unlimited/' /usr/lib/jvm/default-jvm/conf/security/java.security
+ rm -f /openhab/runtime/instances/instance.properties
+ rm -f /openhab/userdata/tmp/instances/instance.properties
+ NEW_USER_ID=998
+ NEW_GROUP_ID=998
+ echo 'Starting with openhab user id: 998 and group id: 998'
Starting with openhab user id: 998 and group id: 998
+ id -u openhab
+ initialize_volume /openhab/conf /openhab/dist/conf
+ volume=/openhab/conf
+ source=/openhab/dist/conf
++ ls -A /openhab/conf
+ '[' -z 'html
icons
items
persistence
rules
scripts
services
sitemaps
sounds
things
transform' ']'
+ initialize_volume /openhab/userdata /openhab/dist/userdata
+ volume=/openhab/userdata
+ source=/openhab/dist/userdata
++ ls -A /openhab/userdata
+ '[' -z 'etc
logs
tmp' ']'
++ cmp /openhab/userdata/etc/version.properties /openhab/dist/userdata/etc/version.properties
+ '[' '!' -z ']'
+ chown -R openhab:openhab /openhab
+ sync
+ '[' -d /etc/cont-init.d ']'
+ sync
+ '[' false == false ']'
++ IFS=' '
++ echo gosu openhab tini -s ./start.sh
+ '[' 'gosu openhab tini -s ./start.sh' == 'gosu openhab tini -s ./start.sh' ']'
+ command=($@ server)
+ exec gosu openhab tini -s ./start.sh server
[FATAL tini (24)] exec ./start.sh failed: No such file or directory
