refactor: Revise Dockerfile - Remove entrypoint.sh (#598)

* chore: Formatting

* chore: Formatting (fix indent)

* refactor: Remove entrypoint

* chore: Remove `entrypoint.sh` from `.goreleaser.yaml`

* tests: Replace `entrypoint.sh` script usage in `e2eentry.sh`

* Set default plugin argument from environment variable in main function and update Dockerfile to remove CMD instruction

* Add user and group setup for testing in Dockerfile and update e2e entry script

* Update cmd/sshpiperd/main.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update cmd/sshpiperd/main.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Remove test user and group creation from Dockerfile and move it to e2e entry script; update plugin argument handling in main function

* Update Dockerfile

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Skip empty plugin directory entries in main function

---------

Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

e2e/docker-compose.yml

@@ -101,6 +101,7 @@ services:
       - SSHPIPERD_E2E_TEST=1
       - SSHPIPERD_DEBUG=${SSHPIPERD_DEBUG}
       - SSHPIPERD_ALLOWED_PROXY_ADDRESSES=0.0.0.0/0
+      - SSHPIPERD_SERVER_KEY_GENERATE_MODE=notexist
       - DOCKER_API_VERSION=1.40
     build: 
       context: ../

e2e/e2eentry.sh

@@ -1,9 +1,6 @@
 #!/bin/bash
 set -x
 
-# use entrypoint.sh to generate the ssh_host_ed25519_key
-PLUGIN="dummy_badname/" bash /sshpiperd/entrypoint.sh 2>/dev/null
-
 groupadd -f testgroup && \
 useradd -m -G testgroup testgroupuser