docker-compose

Name: docker-compose
Author: BagelHole

42stars4forks

How to install docker-compose?

bagelhole/devops-security-agent-skills/docker-compose

$npx -y skills add BagelHole/DevOps-Security-Agent-Skills --skill docker-compose

Installs into the current project.

Summary

Define and run multi-container Docker applications using Docker Compose. Create compose files, manage service dependencies, configure networks and volumes, and orchestrate local development environments. Use when setting up multi-service applications or development environments.

Files · 1

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SKILL.md

1	# Docker Compose
2
3	Orchestrate multi-container applications with declarative YAML configuration.
4
5	## When to Use This Skill
6
7	Use this skill when:
8	- Running multi-container applications locally
9	- Setting up development environments
10	- Defining service dependencies and networking
11	- Managing application stacks with multiple services
12	- Creating reproducible development setups
13
14	## Prerequisites
15
16	- Docker Engine with Compose plugin (v2)
17	- Basic Docker knowledge
18	- YAML syntax understanding
19
20	## Basic Configuration
21
22	### Simple Application Stack
23
24	```yaml
25	# docker-compose.yml
26	version: '3.8'
27
28	services:
29	web:
30	build: .
31	ports:
32	- "3000:3000"
33	environment:
34	- NODE_ENV=development
35	- DATABASE_URL=postgres://postgres:secret@db:5432/myapp
36	depends_on:
37	- db
38	- redis
39
40	db:
41	image: postgres:15-alpine
42	environment:
43	POSTGRES_USER: postgres
44	POSTGRES_PASSWORD: secret
45	POSTGRES_DB: myapp
46	volumes:
47	- postgres-data:/var/lib/postgresql/data
48	ports:
49	- "5432:5432"
50
51	redis:
52	image: redis:7-alpine
53	ports:
54	- "6379:6379"
55
56	volumes:
57	postgres-data:
58	```
59
60	## Service Configuration
61
62	### Build Options
63
64	```yaml
65	services:
66	app:
67	build:
68	context: ./app
69	dockerfile: Dockerfile.dev
70	args:
71	NODE_VERSION: "20"
72	target: development
73	cache_from:
74	- myapp:cache
75	image: myapp:dev
76	```
77
78	### Environment Variables
79
80	```yaml
81	services:
82	app:
83	environment:
84	- NODE_ENV=production
85	- API_KEY=${API_KEY} # From shell or .env file
86	env_file:
87	- .env
88	- .env.local
89	```
90
91	### Port Mapping
92
93	```yaml
94	services:
95	web:
96	ports:
97	- "3000:3000" # HOST:CONTAINER
98	- "127.0.0.1:9229:9229" # Bind to localhost only
99	- "8080-8090:8080-8090" # Port range
100	expose:
101	- "3000" # Internal only (no host binding)
102	```
103
104	### Volume Mounts
105
106	```yaml
107	services:
108	app:
109	volumes:
110	# Named volume
111	- app-data:/app/data
112	# Bind mount
113	- ./src:/app/src
114	# Read-only bind mount
115	- ./config:/app/config:ro
116	# Anonymous volume (for node_modules)
117	- /app/node_modules
118
119	volumes:
120	app-data:
121	driver: local
122	```
123
124	### Dependencies
125
126	```yaml
127	services:
128	web:
129	depends_on:
130	db:
131	condition: service_healthy
132	redis:
133	condition: service_started
134
135	db:
136	image: postgres:15
137	healthcheck:
138	test: ["CMD-SHELL", "pg_isready -U postgres"]
139	interval: 10s
140	timeout: 5s
141	retries: 5
142	```
143
144	## Networking
145
146	### Custom Networks
147
148	```yaml
149	services:
150	frontend:
151	networks:
152	- frontend-net
153
154	backend:
155	networks:
156	- frontend-net
157	- backend-net
158
159	db:
160	networks:
161	- backend-net
162
163	networks:
164	frontend-net:
165	driver: bridge
166	backend-net:
167	driver: bridge
168	internal: true # No external access
169	```
170
171	### Network Aliases
172
173	```yaml
174	services:
175	db:
176	networks:
177	backend:
178	aliases:
179	- database
180	- postgres
181
182	networks:
183	backend:
184	```
185
186	## Resource Limits
187
188	```yaml
189	services:
190	app:
191	deploy:
192	resources:
193	limits:
194	cpus: '2'
195	memory: 1G
196	reservations:
197	cpus: '0.5'
198	memory: 256M
199	```
200
201	## Multiple Compose Files
202
203	### Override Files
204
205	```yaml
206	# docker-compose.yml (base)
207	services:
208	web:
209	image: myapp:latest
210	ports:
211	- "3000:3000"
212
213	# docker-compose.override.yml (development - auto-loaded)
214	services:
215	web:
216	build: .
217	volumes:
218	- ./src:/app/src
219	environment:
220	- DEBUG=true
221
222	# docker-compose.prod.yml (production)
223	services:
224	web:
225	deploy:
226	replicas: 3
227	environment:
228	- DEBUG=false
229	```
230
231	### Using Multiple Files
232
233	```bash
234	# Development (uses override automatically)
235	docker compose up
236
237	# Production
238	docker compose -f docker-compose.yml -f docker-compose.prod.yml up
239
240	# Merge and view final config
241	docker compose -f docker-compose.yml -f docker-compose.prod.yml config
242	```
243
244	## Profiles
245
246	```yaml
247	services:
248	web:
249	image: myapp
250
251	db:
252	image: postgres:15
253
254	debug:
255	image: busybox
256	profiles:
257	- debug
258
259	monitoring:
260	image: prometheus
261	profiles:
262	- monitoring
263	```
264
265	```bash
266	# Run without profiles (web, db only)
267	docker compose up
268
269	# Run with debug profile
270	docker compose --profile debug up
271
272	# Run with multiple profiles
273	docker compose --profile debug --profile monitoring up
274	```
275
276	## Commands
277
278	### Lifecycle
279
280	```bash
281	# Start services
282	docker compose up -d
283
284	# Start specific service
285	docker compose up -d web
286
287	# Stop services
288	docker compose stop
289
290	# Stop and remove containers
291	docker compose down
292
293	# Stop and remove everything incl

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docker-compose

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View on GitHub

How to install docker-compose?

bagelhole/devops-security-agent-skills/docker-compose

$npx -y skills add BagelHole/DevOps-Security-Agent-Skills --skill docker-compose

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Docker Compose
2
3	Orchestrate multi-container applications with declarative YAML configuration.
4
5	## When to Use This Skill
6
7	Use this skill when:
8	- Running multi-container applications locally
9	- Setting up development environments
10	- Defining service dependencies and networking
11	- Managing application stacks with multiple services
12	- Creating reproducible development setups
13
14	## Prerequisites
15
16	- Docker Engine with Compose plugin (v2)
17	- Basic Docker knowledge
18	- YAML syntax understanding
19
20	## Basic Configuration
21
22	### Simple Application Stack
23
24	```yaml
25	# docker-compose.yml
26	version: '3.8'
27
28	services:
29	web:
30	build: .
31	ports:
32	- "3000:3000"
33	environment:
34	- NODE_ENV=development
35	- DATABASE_URL=postgres://postgres:secret@db:5432/myapp
36	depends_on:
37	- db
38	- redis
39
40	db:
41	image: postgres:15-alpine
42	environment:
43	POSTGRES_USER: postgres
44	POSTGRES_PASSWORD: secret
45	POSTGRES_DB: myapp
46	volumes:
47	- postgres-data:/var/lib/postgresql/data
48	ports:
49	- "5432:5432"
50
51	redis:
52	image: redis:7-alpine
53	ports:
54	- "6379:6379"
55
56	volumes:
57	postgres-data:
58	```
59
60	## Service Configuration
61
62	### Build Options
63
64	```yaml
65	services:
66	app:
67	build:
68	context: ./app
69	dockerfile: Dockerfile.dev
70	args:
71	NODE_VERSION: "20"
72	target: development
73	cache_from:
74	- myapp:cache
75	image: myapp:dev
76	```
77
78	### Environment Variables
79
80	```yaml
81	services:
82	app:
83	environment:
84	- NODE_ENV=production
85	- API_KEY=${API_KEY} # From shell or .env file
86	env_file:
87	- .env
88	- .env.local
89	```
90
91	### Port Mapping
92
93	```yaml
94	services:
95	web:
96	ports:
97	- "3000:3000" # HOST:CONTAINER
98	- "127.0.0.1:9229:9229" # Bind to localhost only
99	- "8080-8090:8080-8090" # Port range
100	expose:
101	- "3000" # Internal only (no host binding)
102	```
103
104	### Volume Mounts
105
106	```yaml
107	services:
108	app:
109	volumes:
110	# Named volume
111	- app-data:/app/data
112	# Bind mount
113	- ./src:/app/src
114	# Read-only bind mount
115	- ./config:/app/config:ro
116	# Anonymous volume (for node_modules)
117	- /app/node_modules
118
119	volumes:
120	app-data:
121	driver: local
122	```
123
124	### Dependencies
125
126	```yaml
127	services:
128	web:
129	depends_on:
130	db:
131	condition: service_healthy
132	redis:
133	condition: service_started
134
135	db:
136	image: postgres:15
137	healthcheck:
138	test: ["CMD-SHELL", "pg_isready -U postgres"]
139	interval: 10s
140	timeout: 5s
141	retries: 5
142	```
143
144	## Networking
145
146	### Custom Networks
147
148	```yaml
149	services:
150	frontend:
151	networks:
152	- frontend-net
153
154	backend:
155	networks:
156	- frontend-net
157	- backend-net
158
159	db:
160	networks:
161	- backend-net
162
163	networks:
164	frontend-net:
165	driver: bridge
166	backend-net:
167	driver: bridge
168	internal: true # No external access
169	```
170
171	### Network Aliases
172
173	```yaml
174	services:
175	db:
176	networks:
177	backend:
178	aliases:
179	- database
180	- postgres
181
182	networks:
183	backend:
184	```
185
186	## Resource Limits
187
188	```yaml
189	services:
190	app:
191	deploy:
192	resources:
193	limits:
194	cpus: '2'
195	memory: 1G
196	reservations:
197	cpus: '0.5'
198	memory: 256M
199	```
200
201	## Multiple Compose Files
202
203	### Override Files
204
205	```yaml
206	# docker-compose.yml (base)
207	services:
208	web:
209	image: myapp:latest
210	ports:
211	- "3000:3000"
212
213	# docker-compose.override.yml (development - auto-loaded)
214	services:
215	web:
216	build: .
217	volumes:
218	- ./src:/app/src
219	environment:
220	- DEBUG=true
221
222	# docker-compose.prod.yml (production)
223	services:
224	web:
225	deploy:
226	replicas: 3
227	environment:
228	- DEBUG=false
229	```
230
231	### Using Multiple Files
232
233	```bash
234	# Development (uses override automatically)
235	docker compose up
236
237	# Production
238	docker compose -f docker-compose.yml -f docker-compose.prod.yml up
239
240	# Merge and view final config
241	docker compose -f docker-compose.yml -f docker-compose.prod.yml config
242	```
243
244	## Profiles
245
246	```yaml
247	services:
248	web:
249	image: myapp
250
251	db:
252	image: postgres:15
253
254	debug:
255	image: busybox
256	profiles:
257	- debug
258
259	monitoring:
260	image: prometheus
261	profiles:
262	- monitoring
263	```
264
265	```bash
266	# Run without profiles (web, db only)
267	docker compose up
268
269	# Run with debug profile
270	docker compose --profile debug up
271
272	# Run with multiple profiles
273	docker compose --profile debug --profile monitoring up
274	```
275
276	## Commands
277
278	### Lifecycle
279
280	```bash
281	# Start services
282	docker compose up -d
283
284	# Start specific service
285	docker compose up -d web
286
287	# Stop services
288	docker compose stop
289
290	# Stop and remove containers
291	docker compose down
292
293	# Stop and remove everything incl

People who liked this also viewed

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