Move 'stacks' directory to 'compose' and refactor slides accordingly

compose/prometheus/Dockerfile

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+FROM prom/prometheus:v1.4.1
+COPY prometheus.yml /etc/prometheus/prometheus.yml
+

compose/prometheus/docker-compose.yml

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+version: "3"
+
+services:
+
+  prometheus:
+    build: .
+    image: 127.0.0.1:5000/prom
+    ports:
+      - "9090:9090"
+
+  node:
+    image: prom/node-exporter
+    command: --path.procfs /host/proc --path.sysfs /host/proc --collector.filesystem.ignored-mount-points "^(sys|proc|dev|host|etc)($$|/)"
+    deploy:
+      mode: global
+    volumes:
+      - "/proc:/host/proc"
+      - "/sys:/host/sys"
+      - "/:/rootfs"
+
+  cadvisor:
+    image: google/cadvisor
+    deploy:
+      mode: global
+    volumes:
+      - "/:/rootfs"
+      - "/var/run:/var/run"
+      - "/sys:/sys"
+      - "/var/lib/docker:/var/lib/docker"
+

compose/prometheus/prometheus.yml

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+global:
+  scrape_interval: 10s
+scrape_configs:
+  - job_name: 'prometheus'
+    static_configs:
+      - targets: ['localhost:9090']
+  - job_name: 'node'
+    dns_sd_configs:
+      - names: ['tasks.node']
+        type: 'A'
+        port: 9100
+  - job_name: 'cadvisor'
+    dns_sd_configs:
+      - names: ['tasks.cadvisor']
+        type: 'A'
+        port: 8080
+

compose/prometheus/stack-with-config.yml

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+version: "3.3"
+
+services:
+
+  prometheus:
+    image: prom/prometheus:v1.4.1
+    ports:
+      - "9090:9090"
+    configs:
+      - source: prometheus
+        target: /etc/prometheus/prometheus.yml
+
+  node:
+    image: prom/node-exporter
+    command: --path.procfs /host/proc --path.sysfs /host/proc --collector.filesystem.ignored-mount-points "^(sys|proc|dev|host|etc)($$|/)"
+    deploy:
+      mode: global
+    volumes:
+      - "/proc:/host/proc"
+      - "/sys:/host/sys"
+      - "/:/rootfs"
+
+  cadvisor:
+    image: google/cadvisor
+    deploy:
+      mode: global
+    volumes:
+      - "/:/rootfs"
+      - "/var/run:/var/run"
+      - "/sys:/sys"
+      - "/var/lib/docker:/var/lib/docker"
+
+configs:
+  prometheus:
+    file: ./prometheus.yml