Move code into new component package

This commit cleans up the resources in the 'embed' package, and instead
moves them into subpackages of a new 'compose' package. This makes sure
that '.env' templates and docker compose contexts are located in the
same location.

embed/resources/compose/self/docker-compose.yml

@@ -1,28 +0,0 @@
-version: "3.7"
-
-services:
-  tr:
-    image: ghcr.io/tkw1536/tr:latest
-    restart: always
-    volumes:
-      - "${OVERRIDES_FILE}:/overrides.json:ro"
-    environment:
-      # port and hostname for this image to use
-      VIRTUAL_HOST: ${VIRTUAL_HOST}
-      VIRTUAL_PORT: 8080
-      VIRTUAL_PATH: /
-      
-      # optional letsencrypt email
-      LETSENCRYPT_HOST: ${LETSENCRYPT_HOST}
-      LETSENCRYPT_EMAIL: ${LETSENCRYPT_EMAIL}
-
-      # the overrides file
-      OVERRIDES: /overrides.json
-
-      # where to redirect to
-      TARGET: ${TARGET}
-
-networks:
-  default:
-    name: distillery
-    external: true