Run command in existing container:
docker exec -ti container-name-or-id /bin/bash
docker exec -ti -u root container-name-or-id /bin/bash
View the Dockerfile of an image:
First pull the image, then view its history:
docker pull bitnami/odoo:17.0.20240705-debian-12-r0
docker history bitnami/odoo:17.0.20240705-debian-12-r0
If you are dealing with a Dockerfile flattened by crane, this works pretty well:
docker history bitnami/odoo:17.0.20240705-debian-12-r0 | perl -lane 'print "@F[6..$#F]"' | jq -C .
# or
docker history bitnami/odoo:17.0.20240705-debian-12-r0 | perl -lane 'print "@F[6..$#F]"' | jq -r '.[].created_by'