Migrate from Docker volume mount to named volume

More info, see https://notes.sklein.xyz/2024-12-09_1550/zen/

Author: stephane-klein

demo/.envrc

@@ -0,0 +1,6 @@
+export PROJECT_NAME="demo_restic_pg_dump"
+export INSTANCE_ID=$(pwd | shasum -a 1 | awk '{print $1}' | cut -c 1-12) # Used to define docker volume path
+export COMPOSE_PROJECT_NAME=${PROJECT_NAME}_${INSTANCE_ID}
+
+export AWS_ACCESS_KEY_ID=admin
+export AWS_SECRET_ACCESS_KEY=password

demo/.gitignore

@@ -1,2 +1 @@
-volumes/
-backup/
+backup/

demo/README.md

@@ -1,6 +1,7 @@
 # How to use stephaneklein/restic-pg_dump Docker Image
 
 ```
+$ source .envrc
 $ docker compose build # optional, only used for development activities
 $ ./scripts/up.sh
 ```
@@ -23,7 +24,7 @@ Read the ["Installation" section](https://restic.readthedocs.io/en/stable/020_in
 Load secret environment variables:
 
 ```
-$ source source.env
+$ source .envrc
 ```
 
 Here's how to display the snapshot list:
@@ -115,3 +116,9 @@ postgres=# select * from contacts limit 2;
 
 ```
 
+
+## Teardown
+
+```sh
+$ docker compose down -v
+```

demo/docker-compose.yml

@@ -22,7 +22,7 @@ services:
         ports:
             - "5432:5432"
         volumes:
-            - ./volumes/postgres/:/var/lib/postgresql/data/
+            - postgres:/var/lib/postgresql/data/
         healthcheck:
             test: ["CMD", "sh", "-c", "pg_isready -U $$POSTGRES_USER -h $$(hostname -i)"]
             interval: 10s
@@ -37,7 +37,7 @@ services:
         ports:
             - "5433:5432"
         volumes:
-            - ./volumes/postgres-test-restore/:/var/lib/postgresql/data/
+            - postgres-test-restore:/var/lib/postgresql/data/
         healthcheck:
             test: ["CMD", "sh", "-c", "pg_isready -U $$POSTGRES_USER -h $$(hostname -i)"]
             interval: 10s
@@ -52,11 +52,19 @@ services:
             - "9000:9000"
             - "9001:9001"
         volumes:
-            - ./volumes/minio/:/data
+            - minio:/data
         command: server /data --console-address ":9001"
         healthcheck:
           test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
           interval: 5s
           timeout: 10s
           retries: 3
           start_period: 10s
+
+volumes:
+  postgres:
+     name: ${COMPOSE_PROJECT_NAME}_postgres
+  postgres-restore-test:
+     name: ${COMPOSE_PROJECT_NAME}_postgres
+  minio:
+     name: ${COMPOSE_PROJECT_NAME}_minio

demo/scripts/up.sh

@@ -3,6 +3,7 @@ set -e
 
 cd "$(dirname "$0")/../"
 
+source .envrc
 docker compose up -d postgres minio --wait
 
 ./scripts/import-demo-to-postgresql.sh