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Diffstat (limited to '')
| -rw-r--r-- | docker-compose.yml | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/docker-compose.yml b/docker-compose.yml index 18ec75e..c0dda14 100644 --- a/docker-compose.yml +++ b/docker-compose.yml @@ -1,20 +1,38 @@ +# I had conflicting requirements: +# * make Makefile available during the build to avoid code duplication, +# * make out-of-tree builds possible (i.e. this directory, along with Makefile, +# shouldn't be required to reside inside the project directory). +# +# So, I basically had two build contexts (PROJECT_DIR and this directory), +# which is unsupported. +# On the other hand, I only need the Makefile from this directory, so I could +# hack it by passing the contents of the Makefile as a build argument. +# I thought this was too much though, so I came up with making two images, one +# containing the Makefile (and Ruby, etc.), and the other extending the base +# one. +# This has some nice properties (there's now a common base image for all Jekyll +# projects), but some drawbacks as well. version: '3.2' services: base: build: context: . - dockerfile: "$PWD/Dockerfile.base" + dockerfile: Dockerfile.base args: JEKYLL_USER: developer project: build: context: "${PROJECT_DIR:-..}" + # Dockerfile outside of the build context. + # This is supposedly supported by Docker since 18.03, but I couldn't find + # a less hacky way to do it. + # Source: https://github.com/docker/compose/issues/4926. dockerfile: "$PWD/Dockerfile.project" depends_on: + # It actually doesn't depend on anything, but the base image needs to be + # built before this image. - base ports: - 4000:4000 volumes: - - type: bind - source: "${PROJECT_DIR:-..}" - target: '/project' + - "${PROJECT_DIR:-..}:/project" |