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14 Commits
cf9c01b06a ... main

Author SHA1 Message Date
3wc
8ee13fd2e1 Fix URL for Traefik dashboard 2025-07-29 17:29:48 +01:00
3wc
9add5b2f82 Add challenge 9 2025-07-29 17:29:38 +01:00
3wc
eab930b1f2 Add challenge 8 2025-07-29 17:26:12 +01:00
3wc
e9e49b46f2 Enable traefik dashboard for 7 2025-07-29 17:25:55 +01:00
3wc
2d8c9d637c Add challenge 7 2025-07-29 17:17:09 +01:00
3wc
dce3933c9e Add challenge 6 2025-07-29 17:06:12 +01:00
3wc
c7db1c59ac Add challenge 5 2025-07-29 17:04:48 +01:00
3wc
d3a4ad6bb2 Fix permissions on 4/entrypoint.sh 2025-07-29 17:03:19 +01:00
3wc
cd463bf5a5 Add challenge 4 2025-07-29 15:19:39 +01:00
3wc
62ec30984e Update post-success steps 2025-07-29 15:01:32 +01:00
3wc
422c1b3126 Add challenges #2 and #3 2025-07-29 14:59:25 +01:00
3wc
c09cb3d374 Less pessimistic space requirements 2025-07-29 14:51:52 +01:00
3wc
825fac41b1 Add challenge 1 2025-07-29 14:49:59 +01:00
3wc
092f821553 Add favicon, fix charset, fix index path 2025-07-29 14:49:42 +01:00
18 changed files with 255 additions and 3 deletions
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2
.infra/Dockerfile
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@ -2,7 +2,7 @@ FROM nginx:1.29.0
COPY entrypoint.sh /custom-docker-entrypoint.sh
COPY index.html /usr/share/nginx/html/index.html
COPY index.html /usr/share/nginx/html/index.html.tmpl
RUN ["chmod", "a+x", "/custom-docker-entrypoint.sh"]

5
.infra/index.html
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@ -1,8 +1,13 @@
<html>
<head>
<meta charset="UTF-8">
<title>Docker Debugging Disco – Challenge ${CHALLENGE}</title>
<link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🪩</text></svg>">
</head>
<body>
<h1>Far out! Challenge ${CHALLENGE} complete 🕺</h1>
<p>
Now head back to your terminal where you ran `docker compose up`, hit <code>Ctrl+C</code>, then run <code>docker compose down</code>… and move on to the next challenge!
</p>
</body>
</html>

11
1/docker-compose.yml Normal file
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@ -0,0 +1,11 @@
---
# Nice and simple, this challenge just tests that things are working correctly.
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
ports:
- 8000:80
environment:
- CHALLENGE=1

12
2/docker-compose.yml Normal file
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@ -0,0 +1,12 @@
---
# TIP: Where can we see a list of valid image tags (versions?).
# TIP: Check on git.autonomic.zone -- don't peek at challenge 1!
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.2.0
ports:
- 8000:80
environment:
- CHALLENGE=2

11
3/docker-compose.yml Normal file
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@ -0,0 +1,11 @@
---
# TIP: Where can we see a list of valid image repos (names)?
# TIP: Check on git.autonomic.zone -- don't peek at challenge 1 or 2!
services:
app:
image: git.autonomic.zone/autonomic-cooperative/disco:0.1.0
ports:
- 8000:80
environment:
- CHALLENGE=3

17
4/docker-compose.yml Normal file
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@ -0,0 +1,17 @@
---
# TIP: Little more complex, now we have a "custom entrypoint", a script that runs whenever the container starts
# TIP: Do you notice anything wrong with any of the entrypoint lines?
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
ports:
- 8000:80
configs:
- source: custom_entrypoint
target: /custom-docker-entrypoint-2.sh
entrypoint: /custom-docker-entrypoint-2.sh
configs:
custom_entrypoint:
file: entrypoin.sh

5
4/entrypoint.sh Executable file
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@ -0,0 +1,5 @@
#!/bin/sh
export CHALLENGE=4
/custom-docker-entrypoint.sh

16
5/docker-compose.yml Normal file
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@ -0,0 +1,16 @@
---
# TIP: Why can't Docker run the entrypoint?
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
ports:
- 8000:80
configs:
- source: custom_entrypoint
target: /custom-docker-entrypoint-2.sh
entrypoint: /custom-docker-entrypoint-2.sh
configs:
custom_entrypoint:
file: entrypoint.sh

5
5/entrypoint.sh Normal file
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@ -0,0 +1,5 @@
#!/bin/sh
export CHALLENGE=5
/custom-docker-entrypoint.sh

16
6/docker-compose.yml Normal file
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@ -0,0 +1,16 @@
---
# TIP: Why can't Docker find the entrypoint?
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
ports:
- 8000:80
configs:
- source: custom_entrypoint
target: /custom-docker-entrypoint-2.sh
entrypoint: /custom-docker-entrypoint-3.sh
configs:
custom_entrypoint:
file: entrypoint.sh

5
6/entrypoint.sh Normal file
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@ -0,0 +1,5 @@
#!/bin/sh
export CHALLENGE=6
/custom-docker-entrypoint.sh

35
7/docker-compose.yml Normal file
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@ -0,0 +1,35 @@
---
# TIP: This is just a sense check, should run without errors. Complicating things slightly by adding a reverse proxy (this is how all co-op cloud services are hosting)
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
environment:
- CHALLENGE=7
labels:
- "traefik.enable=true"
- "traefik.docker.network=proxy"
- "traefik.http.services.challenge-7.loadbalancer.server.port=80"
- "traefik.http.routers.challenge-7.rule=Host(`localhost`)"
networks:
proxy:
proxy:
image: traefik
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
networks:
proxy:
configs:
- source: traefik_yml
target: /traefik.yml
ports:
- 8000:80
- 8080:8080
networks:
proxy:
configs:
traefik_yml:
file: traefik.yml

14
7/traefik.yml Normal file
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@ -0,0 +1,14 @@
api:
dashboard: true
insecure: true
debug: true
entryPoints:
web:
address: ":80"
serversTransport:
insecureSkipVerify: true
providers:
docker:
endpoint: "unix:///var/run/docker.sock"
# exposedByDefault: false
network: proxy # Optional; Only use the "proxy" Docker network, even if containers are on multiple networks.

35
8/docker-compose.yml Normal file
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@ -0,0 +1,35 @@
---
# TIP: Why isn't Traefik routing correctly? Don't peek at challenge 7! Try checking the Traefik dashboard on http://localhost:8080/dashboard/
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
environment:
- CHALLENGE=7
labels:
- "traefik.enable=true"
- "traefik.docker.network=proxy"
- "traefik.http.services.challenge-7.loadbalancer.server.port=8000"
- "traefik.http.routers.challenge-7.rule=Host(`localhost`)"
networks:
proxy:
proxy:
image: traefik
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
networks:
proxy:
configs:
- source: traefik_yml
target: /traefik.yml
ports:
- 8000:80
- 8080:8080
networks:
proxy:
configs:
traefik_yml:
file: traefik.yml

14
8/traefik.yml Normal file
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@ -0,0 +1,14 @@
api:
dashboard: true
insecure: true
debug: true
entryPoints:
web:
address: ":80"
serversTransport:
insecureSkipVerify: true
providers:
docker:
endpoint: "unix:///var/run/docker.sock"
# exposedByDefault: false
network: proxy # Optional; Only use the "proxy" Docker network, even if containers are on multiple networks.

33
9/docker-compose.yml Normal file
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@ -0,0 +1,33 @@
---
# TIP: Why isn't Traefik routing correctly? Don't peek at challenge 7 or 8! Try checking the Traefik dashboard on http://localhost:8080/dashboard/
services:
app:
image: git.autonomic.zone/autonomic-cooperative/docker-debugging-disco:0.1.0
environment:
- CHALLENGE=7
labels:
- "traefik.enable=true"
- "traefik.docker.network=proxy"
- "traefik.http.services.challenge-7.loadbalancer.server.port=80"
- "traefik.http.routers.challenge-7.rule=Host(`localhost`)"
proxy:
image: traefik
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
networks:
proxy:
configs:
- source: traefik_yml
target: /traefik.yml
ports:
- 8000:80
- 8080:8080
networks:
proxy:
configs:
traefik_yml:
file: traefik.yml

14
9/traefik.yml Normal file
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@ -0,0 +1,14 @@
api:
dashboard: true
insecure: true
debug: true
entryPoints:
web:
address: ":80"
serversTransport:
insecureSkipVerify: true
providers:
docker:
endpoint: "unix:///var/run/docker.sock"
# exposedByDefault: false
network: proxy # Optional; Only use the "proxy" Docker network, even if containers are on multiple networks.

8
README.md
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@ -6,9 +6,9 @@ Bust some docker troubleshooting moves 🕺
- [ ] [Install Docker](https://docs.docker.com/engine/install/)
- [ ] Clone this repository
- [ ] Make sure you have ~1GB free disk space
- [ ] Make sure you have ~100MB free disk space
## Start the jam
## Start the jam
Each numbered subfolder contains a funky docker challenge.
@ -22,3 +22,7 @@ docker compose up
```
NOTE: if you get a Docker error message running `docker compose`, you might be on a vintage version of Docker – no worries, either update if possible, or [install Docker Compose Standalone](https://docs.docker.com/compose/install/standalone/) and run `docker-compose` (with a hyphen) instead
## Trouble on the dancefloor?
Check out `docker-compose.yml` in each challenge directory for hints.