The translation of the podcast transcription was prepared in advance of the start of the course "Linux Administrator"
Docker Compose β
, .
, YAML-
.
docker compose v3 YAML- , Docker Swarm.
, docker-compose ? ? , β , :
- :
, . - : (
) docker-compose , -
, docker compose .
, ,
. , ,
, . -
.
,
, ( ),
,
, . .
, , .
(
).
,
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Docker compose compose-
. :
$ cat docker-compose.yml
version: "3.2"
services:
whale:
image: docker/whalesay
command: ["cowsay", "hello!"]
$ docker-compose up
Creating network "composeconfigs_default" with the default driver
Starting composeconfigs_whale_1
Attaching to composeconfigs_whale_1
whale_1 | ________
whale_1 | < hello! >
whale_1 | --------
whale_1 | \
whale_1 | \
whale_1 | \
whale_1 | ## .
whale_1 | ## ## ## ==
whale_1 | ## ## ## ## ===
whale_1 | /""""""""""""""""___/ ===
whale_1 | ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
whale_1 | \______ o __/
whale_1 | \ \ __/
whale_1 | \____\______/
composeconfigs_whale_1 exited with code 0 , docker compose compose-
, . :
$ cat docker-compose.second.yml
version: "3.2"
services:
whale:
command: ["cowsay", "bye!"]
$ docker-compose -f docker-compose.yml -f docker-compose.second.yml up
Creating composeconfigs_whale_1
Attaching to composeconfigs_whale_1
whale_1 | ______
whale_1 | < bye! >
whale_1 | ------
whale_1 | \
whale_1 | \
whale_1 | \
whale_1 | ## .
whale_1 | ## ## ## ==
whale_1 | ## ## ## ## ===
whale_1 | /""""""""""""""""___/ ===
whale_1 | ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
whale_1 | \______ o __/
whale_1 | \ \ __/
whale_1 | \____\______/
composeconfigs_whale_1 exited with code 0 ,
.
, docker compose
docker-compose.override.yml docker-compose.yml.
, , :
$ mv docker-compose.second.yml docker-compose.override.yml
$ docker-compose up
Starting composeconfigs_whale_1
Attaching to composeconfigs_whale_1
whale_1 | ______
whale_1 | < bye! >
whale_1 | ------
whale_1 | \
whale_1 | \
whale_1 | \
whale_1 | ## .
whale_1 | ## ## ## ==
whale_1 | ## ## ## ## ===
whale_1 | /""""""""""""""""___/ ===
whale_1 | ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
whale_1 | \______ o __/
whale_1 | \ \ __/
whale_1 | \____\______/
composeconfigs_whale_1 exited with code 0, .
services:
my-service:
build:
context: .
image: private.registry.mine/my-stack/my-service:${MY_SERVICE_VERSION:-latest}
... docker-compose build ( push)
$MY_SERVICE_VERSION, latest,
,
private.registry.mine.
, , .
:
- , ( )
docker-compose. - , ,
. - .
- docker-compose.yml.
-
, (, ,
). -
,
. - - docker stack deploy β compose-file docker-compose.yml --with-registry-auth my-stack-name.
- docker-compose up -d.
.
# docker-compose.yml
...
services:
my-service:
build:
context: .
image: private.registry.mine/my-stack/my-service:${MY_SERVICE_VERSION:-latest}
environment:
API_ENDPOINT: ${API_ENDPOINT:-https://production.my-api.com}
...# docker-compose.override.yml
...
services:
my-service:
ports: # This is needed for development!
- 80:80
environment:
API_ENDPOINT: https://devel.my-api.com
volumes:
- ./:/project/src
... docker-compose (docker-compose up),
, /project/src.
!
docker-compose.yml .
,
CI:
export MY_SERVICE_VERSION=1.2.3
docker-compose -f docker-compose.yml build
docker-compose -f docker-compose.yml push:
export MY_SERVICE_VERSION=1.2.3
docker stack deploy my-stack --compose-file docker-compose.yml --with-registry-auth ,
:
export MY_SERVICE_VERSION=1.2.3
export API_ENDPOINT=http://staging.my-api.com
docker stack deploy my-stack --compose-file docker-compose.yml --with-registry-auth docker-compose ,
!