Docker

There's a lot of depth to be found in docker.

To truly utilize docker you want to use docker-compose. But often the important part is knowing how to specify information, this is where the cheat sheet comes into play.

Caution

To keep oversight i recommand to use an number to identify containers like: 001-NAME.

• Basic compose
• Networked compose
• Local volume compose
• Docker volume compose
• Network volume compose

---

Basic compose:

Note

Its very basic...

Details

+ version: ${VERSION}
+ 
+ services:
+  container:
+    container_name: ${NAME}
+    restart: unless-stopped
+    image: ${IMAGE}:${IMAGE_VERSION}
+    ports:
+     - ${PORT}:${PORT}

Variables

Variable	Example	Explanation
VERSION	2.8	This indicates the docker-compose version.
NAME	container	Specifies the name of the container.
IMAGE	hello-world	What image the container uses.
IMAGE_VERSION	latest	The version of the specified image, can always use "latest".
PORT	80	To enable network traffic over certain ports use this.

---

Logged compose:

Note

Its sending logs now

Details

version: ${VERSION}
 
services:
  container:
    container_name: ${NAME}
    restart: unless-stopped
    image: ${IMAGE}:${IMAGE_VERSION}
    ports:
     - ${PORT}:${PORT}
+    logging:
+      driver: syslog
+      options:
+        syslog-address: "udp://${LOG_HOST}:${LOG_PORT}"
+        tag: ${NAME}

Variables

Variable	Example	Explanation
LOG_HOST	IP-ADDRESS	The ip-address of the syslog server.
LOG_PORT	5514	Port on which the applciation will send logs.

---

Networked compose:

Note

Its connected!

Details

version: ${VERSION}

services:
  container:
    container_name: ${NAME}
    restart: unless-stopped
    image: ${IMAGE}:${VERSION}
    ports:
     - ${PORT}:${PORT}
    logging:
      driver: syslog
      options:
        syslog-address: "udp://${LOG_HOST}:${LOG_PORT}"
        tag: ${NAME}

+    networks:
+      logging-network:
+        ipv4_address: ${IP_ADDRESS}
+        gateway: ${GATEWAY_ADDRESS}
+    dns:
+      - ${DNS}

Variables

Variable	Explanation
IP_ADDRESS	ip-address of the container, remove to use first available.
GATEWAY_ADDRESS	Gateway of the network, remove to use default.
DNS	Set a custom DNS server for this specific container.