Update docker-compose.yml to remove duplicate 'security_opt' (#45)

* Update docker-compose.yml to remove duplicate 'security_opt'

Docker compose complains with "mapping key "security_opt" already defined"

* Update and rename docker-compose.yml to compose.yaml

`version:` is deprecated:

https://docs.docker.com/compose/compose-file/04-version-and-name/

compose.yaml is the current standard:

https://docs.docker.com/contribute/style/terminology/#composeyaml

compose.yaml

@@ -0,0 +1,25 @@
+services:
+  web:
+    image: quay.io/redlib/redlib
+    # quay.io/redlib/redlib:latest-arm # uncomment if you use arm64
+    # quay.io/redlib/redlib:latest-armv7 # uncomment if you use armv7
+    restart: always
+    container_name: "redlib"
+    ports:
+      - 8080:8080
+    user: nobody
+    read_only: true
+    security_opt:
+      - no-new-privileges:true
+      - seccomp="seccomp-redlib.json"
+    cap_drop:
+      - ALL
+    networks:
+      - redlib
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "--tries=1", "http://localhost:8080/settings"]
+      interval: 5m
+      timeout: 3s
+
+networks:
+  redlib: