chore: copy elk setup from docker-elk git repo

https://github.com/deviantony/docker-elk

logstash/.dockerignore

@@ -0,0 +1,6 @@
+# Ignore Docker build files
+Dockerfile
+.dockerignore
+
+# Ignore OS artifacts
+**/.DS_Store

logstash/Dockerfile

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+ARG ELASTIC_VERSION
+
+# https://www.docker.elastic.co/
+FROM docker.elastic.co/logstash/logstash:${ELASTIC_VERSION}
+
+# Add your logstash plugins setup here
+# Example: RUN logstash-plugin install logstash-filter-json

logstash/config/logstash.yml

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+---
+## Default Logstash configuration from Logstash base image.
+## https://github.com/elastic/logstash/blob/main/docker/data/logstash/config/logstash-full.yml
+#
+http.host: 0.0.0.0
+
+node.name: logstash

logstash/pipeline/logstash.conf

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+input {
+	beats {
+		port => 5044
+	}
+
+	tcp {
+		port => 50000
+	}
+}
+
+## Add your filters / logstash plugins configuration here
+
+output {
+	elasticsearch {
+		hosts => "elasticsearch:9200"
+		user => "logstash_internal"
+		password => "${LOGSTASH_INTERNAL_PASSWORD}"
+	}
+}