sudo apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
apache2-data apache2-utils
Suggested packages:
apache2-doc apache2-suexec-pristine | apache2-suexec-custom
The following packages will be REMOVED:
docker-ce mysql-server-5.7
The following NEW packages will be installed:
apache2 apache2-data apache2-utils
0 upgraded, 3 newly installed, 2 to remove and 249 not upgraded.
2 not fully installed or removed.
Need to get 0 B/330 kB of archives.
After this operation, 136 MB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 205320 files and directories currently installed.)
Removing docker-ce (17.03.0~ce-0~ubuntu-xenial) ...
/var/lib/dpkg/info/docker-ce.postrm: 18: /var/lib/dpkg/info/docker-                ce.postrm: deb-systemd-helper: not found
dpkg: error processing package docker-ce (--remove):
subprocess installed post-removal script returned error exit status 127
Removing mysql-server-5.7 (5.7.17-0ubuntu0.16.04.1) ...
/var/lib/dpkg/info/mysql-server-5.7.postrm: /usr/bin/deb-systemd-helper:      /usr/bin/env: bad interpreter: No such file or directory
dpkg: error processing package mysql-server-5.7 (--remove):
subprocess installed post-removal script returned error exit status 126
Errors were encountered while processing:
docker-ce
mysql-server-5.7
E: Sub-process /usr/bin/dpkg returned an error code (1)