Add docker files

Add Dockerfile
Add docker-compose.yml

Dockerfile

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+# ----------------------------------
+# Pterodactyl Panel Dockerfile
+# ----------------------------------
+
+FROM golang:1.14-alpine
+COPY . /go/wings/
+WORKDIR /go/wings/
+RUN go build
+
+FROM alpine:latest
+COPY --from=0 /go/wings/wings /usr/bin/
+CMD ["wings","--config", "/srv/daemon/config.yml"]

docker-compose.example.yml

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+version: '3'
+services:
+  daemon:
+    build: .
+    restart: always
+    hostname: daemon
+    ports:
+      - "8080:8080"
+      - "2022:2022"
+    tty: true
+    environment:
+      - "DEBUG=false"
+    volumes:
+      - "/var/run/docker.sock:/var/run/docker.sock"
+      - "/var/lib/docker/containers:/var/lib/docker/containers"
+      - "/srv/daemon/:/srv/daemon/"
+      - "/srv/daemon-data/:/srv/daemon-data/"
+      - "/tmp/pterodactyl/:/tmp/pterodactyl/"
+      - "/etc/timezone:/etc/timezone:ro"
+      ## Required for ssl if you user let's encrypt. uncomment to use.
+      ## - "/etc/letsencrypt/:/etc/letsencrypt/"
+networks:
+  default:
+    ipam:
+      config:
+        - subnet: 172.21.0.0/16