Ghost Docker port mapping issue

kincsescsaba · September 21, 2021, 8:36pm

Hi,
I used Ghost being run from a Docker container without any issues and recently I created a Docker image to run it being installed from source.

I can start the latter container and I can see Ghost’s log saying everything is fine, it’s running on http://localhost:2368 but I did not manage to reach the test site (it simply has the default Casper theme) on the host machine.

I checked the Dockerfiles and by now I don’t see what could be the difference that would result in this behavior.

Can anyone give me a clue about what could possibly go wrong if the only significant difference between two dockerized installations is that the one not working is a from-source installation?

Original Dockerfile:

github.com

docker-library/ghost/blob/3a62cb8161edc9da1ab40c93a2242a779093c58e/4/alpine/Dockerfile

# https://docs.ghost.org/faq/node-versions/
# https://github.com/nodejs/Release (looking for "LTS")
# https://github.com/TryGhost/Ghost/blob/v4.1.2/package.json#L38
FROM node:14-alpine3.13

# grab su-exec for easy step-down from root
RUN apk add --no-cache 'su-exec>=0.2'

RUN apk add --no-cache \
# add "bash" for "[["
		bash

ENV NODE_ENV production

ENV GHOST_CLI_VERSION 1.16.3
RUN set -eux; \
	npm install -g "ghost-cli@$GHOST_CLI_VERSION"; \
	npm cache clean --force

ENV GHOST_INSTALL /var/lib/ghost

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My Dockerfile:

gist.github.com

https://gist.github.com/kincsescsaba/2b33379581c579b2bd25b6f465cc48a8

Dockerfile

# https://docs.ghost.org/faq/node-versions/
# https://github.com/nodejs/Release (looking for "LTS")
# https://github.com/TryGhost/Ghost/blob/v4.1.2/package.json#L38
FROM node:14-alpine3.13

# grab su-exec for easy step-down from root
RUN apk add --no-cache 'su-exec>=0.2'

RUN apk add --no-cache git openssh python3 make; \
	ln -sf python3 /usr/bin/python

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By the moment the from-source version points to an unmodified fork of Ghost 4.2.1

I also checked running curl from inside the container, it loads the page so apparently Ghost is running

kincsescsaba · September 24, 2021, 5:19pm

Solved myself, if anyone would have a similar issue, the culprit is a default network setting in the sample config files disclosed with the source.

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