Clarify TLS label on server deployment

[yamalight]

Better document server label:

--label traefik.http.routers.exoframe-server.tls.certresolver=exoframeChallenge

Needs to be specified only when letsencrypt is enabled. Otherwise it should be removed.
Maybe split the deployment into two parts (with/without letsencrypt)? 🤔

[yamalight]

Also clarify that http->https redirect on exoframe-server deployment needs to be added manually with following labels:

--label traefik.http.middlewares.exoframe-server-redirect.redirectscheme.scheme=https
--label traefik.http.routers.exoframe-server-web.entrypoints=web
--label traefik.http.routers.exoframe-server-web.middlewares=exoframe-server-redirect@docker
--label traefik.http.routers.exoframe-server.entrypoints=websecure

// possibly also:
--label traefik.http.routers.exoframe-server-web.rule=Host(`your.domain`)

[yamalight]

Full set of flags:

        docker run -d \
        -v /var/run/docker.sock:/var/run/docker.sock \
        -v /upb/users/e/ermilov/profiles/unix/cs/.exoframe:/root/.exoframe \
        -v /upb/users/e/ermilov/profiles/unix/cs/.ssh/authorized_keys:/root/.ssh/authorized_keys:ro \
        -e EXO_PRIVATE_KEY=mykey \
        --label traefik.enable=true \
        --label "traefik.http.routers.exoframe-server.rule=Host(\`domain.com\`)" \
        --label "traefik.http.routers.exoframe-server-web.rule=Host(\`domain.com\`)" \
        --label traefik.http.routers.exoframe-server.tls.certresolver=exoframeChallenge \
        --label traefik.http.middlewares.exoframe-server-redirect.redirectscheme.scheme=https \
        --label traefik.http.routers.exoframe-server-web.entrypoints=web \
        --label traefik.http.routers.exoframe-server-web.middlewares=exoframe-server-redirect@docker \
        --label traefik.http.routers.exoframe-server.entrypoints=websecure \
        --label entryPoints.web.address=:80 \
        --label entryPoints.websecure.address=:443 \
        --restart always \
        --name exoframe-server \
        exoframe/server