Repalace env with value when vars floor >= 3

[websoft9]

Repalace env with value when vars floor >= 3

[qiaofeng1227]

[root@iZj6cegvt102afyesj92e8Z mattermost]# docker logs mattermost-db
2022-07-28 07:46:50.276 UTC [1] LOG:  starting PostgreSQL 13.7 on x86_64-pc-linux-musl, compiled by gcc (Alpine 11.2.1_git20220219) 11.2.1 20220219, 64-bit
2022-07-28 07:46:50.276 UTC [1] LOG:  listening on IPv4 address "0.0.0.0", port 5432
2022-07-28 07:46:50.276 UTC [1] LOG:  listening on IPv6 address "::", port 5432
2022-07-28 07:46:50.277 UTC [1] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2022-07-28 07:46:50.281 UTC [49] LOG:  database system was shut down at 2022-07-28 07:46:50 UTC
2022-07-28 07:46:50.285 UTC [1] LOG:  database system is ready to accept connections
2022-07-28 07:46:58.850 UTC [56] FATAL:  password authentication failed for user "postgres"
2022-07-28 07:46:58.850 UTC [56] DETAIL:  Password does not match for user "postgres".
	Connection matched pg_hba.conf line 99: "host all all all md5"

[qiaofeng1227]

.env 文件变量替换只到第二层，第三层是用变量不是用值来替换的。POWER_PASSWORD我们删除后就造成了连接失败

# mattermost/mattermost-team-edition, mattermost-enterprise-edition

APP_REPO=mattermost/mattermost-team-edition
APP_VERSION=latest
APP_PORT=9001
APP_NAME=mattermost
APP_URL_REPLACE=true
APP_URL=47.242.13.247
APP_NETWORK=websoft9

DB_POSTGRES_VERSION=13-alpine
DB_POSTGRES_PASSWORD=hGoe3d2FFAKST2!
DB_POSTGRES_DB=mattermost
DB_POSTGRES_USER=mattermost

# -- below from official .env

POSTGRES_USER=$APP_NAME
POSTGRES_PASSWORD=hGoe3d2FFAKST2!
POSTGRES_DB=$APP_NAME

MM_SERVICESETTINGS_SITEURL=http://47.242.13.247
MM_BLEVESETTINGS_INDEXDIR=/mattermost/bleve-indexes
MM_SQLSETTINGS_DRIVERNAME=postgres
MM_SQLSETTINGS_DATASOURCE=postgres://$APP_NAME:$POWER_PASSWORD@postgres:5432/$APP_NAME?sslmode=disable&connect_timeout=10

[qiaofeng1227]

修改.env以适用2层变量赋值