create kamal

kamal/Dockerfile

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+FROM caddy

kamal/README.md

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+```
+alias kamal='docker run -it --rm -v "${PWD}:/workdir" -v "${SSH_AUTH_SOCK}:/ssh-agent" -v /var/run/docker.sock:/var/run/docker.sock -e "SSH_AUTH_SOCK=/ssh-agent" ghcr.io/basecamp/kamal:latest'
+```
+
+```.env
+KAMAL_REGISTRY_PASSWORD=*
+```
+
+```
+$ docker context create --docker=host=ssh://ubuntu@gamma.fogtype.com gamma
+$ docker context use gamma
+$ docker run --rm -d -p 127.0.0.1:5000:5000 --name registry registry
+$ ssh -NL 5000:localhost:5000 ubuntu@gamma.fogtype.com
+$ docker context use default
+$ kamal deploy
+```
+
+TODO
+
+- [ ] Docker レジストリどうするか問題

kamal/config/deploy.yml

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+# yaml-language-server: $schema=https://raw.githubusercontent.com/kjellberg/mrsk/validate-with-json-schema/lib/mrsk/configuration/schema.yaml
+service: kamal-example
+image: caddy
+servers:
+  - ubuntu@gamma.fogtype.com
+registry:
+  server: localhost:5000
+  username: _
+  password:
+    - KAMAL_REGISTRY_PASSWORD