Simplify docs and remove Docker local setup (#4783)

Having 2 different dev setups caused confusion, let's remove the Docker
local setup and recommend people install yarn locally.

Also simplified some docs by merging pages together, the recommend
self-hosting option is now the docker-compose / to adapt the
docker-compose.

packages/twenty-docker/docker-compose.yml

@@ -0,0 +1,53 @@
+version: "3.9"
+name: twenty
+
+services:
+  server:
+    image: twentycrm/twenty:${TAG}
+    volumes:
+      - server-local-data:/app/${STORAGE_LOCAL_PATH:-.local-storage}
+    ports:
+      - "3000:3000"
+    environment:
+      PORT: 3000
+      PG_DATABASE_URL: postgres://twenty:twenty@${PG_DATABASE_HOST}/default
+      SERVER_URL: ${SERVER_URL}
+      FRONT_BASE_URL: ${FRONT_BASE_URL:-$SERVER_URL}
+
+      ENABLE_DB_MIGRATIONS: "true"
+
+      SIGN_IN_PREFILLED: ${SIGN_IN_PREFILLED}
+      STORAGE_TYPE: ${STORAGE_TYPE}
+      STORAGE_S3_REGION: ${STORAGE_S3_REGION}
+      STORAGE_S3_NAME: ${STORAGE_S3_NAME}
+      STORAGE_S3_ENDPOINT: ${STORAGE_S3_ENDPOINT}
+      ACCESS_TOKEN_SECRET: ${ACCESS_TOKEN_SECRET}
+      LOGIN_TOKEN_SECRET: ${LOGIN_TOKEN_SECRET}
+      REFRESH_TOKEN_SECRET: ${REFRESH_TOKEN_SECRET}
+      FILE_TOKEN_SECRET: ${FILE_TOKEN_SECRET}
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: curl --fail http://localhost:3000/healthz
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    restart: always
+
+  db:
+    image: twentycrm/twenty-postgres:${TAG}
+    volumes:
+      - db-data:/bitnami/postgresql
+    environment:
+      POSTGRES_PASSWORD: ${POSTGRES_ADMIN_PASSWORD}
+    healthcheck:
+      test: pg_isready -U twenty -d default
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    restart: always
+
+volumes:
+  db-data:
+  server-local-data: