docker: build from the local working directory

With this change, the Dockerfile builds the Docker image from the code
checked out in the local filesystem, instead of downloading a revision
from git.

Implements #3657

.dockerignore

@@ -0,0 +1,3 @@
+.hg
+settings.json
+src/node_modules

Dockerfile

@@ -3,16 +3,10 @@
 # https://github.com/ether/etherpad-lite
 #
 # Author: muxator
-#
-# Version 0.1
 
 FROM node:10-buster-slim
 LABEL maintainer="Etherpad team, https://github.com/ether/etherpad-lite"
 
-# git hash of the version to be built.
-# If not given, build the latest development version.
-ARG ETHERPAD_VERSION=develop
-
 # plugins to install while building the container. By default no plugins are
 # installed.
 # If given a value, it has to be a space-separated, quoted list of plugin names.
@@ -25,24 +19,10 @@ ARG ETHERPAD_PLUGINS=
 # this can be done with build args (and is mandatory to build ARM version)
 ENV NODE_ENV=development
 
-# grab the ETHERPAD_VERSION tarball from github (no need to clone the whole
-# repository)
-RUN echo "Getting version: ${ETHERPAD_VERSION}" && \
-	curl \
-		--location \
-		--fail \
-		--silent \
-		--show-error \
-		--output /opt/etherpad-lite.tar.gz \
-		https://github.com/ether/etherpad-lite/archive/"${ETHERPAD_VERSION}".tar.gz && \
-	mkdir /opt/etherpad-lite && \
-	tar xf /opt/etherpad-lite.tar.gz \
-		--directory /opt/etherpad-lite \
-		--strip-components=1 && \
-	rm /opt/etherpad-lite.tar.gz
-
 WORKDIR /opt/etherpad-lite
 
+COPY ./ ./
+
 # install node dependencies for Etherpad
 RUN bin/installDeps.sh && \
 	rm -rf ~/.npm/_cacache
@@ -54,7 +34,7 @@ RUN bin/installDeps.sh && \
 RUN for PLUGIN_NAME in ${ETHERPAD_PLUGINS}; do npm install "${PLUGIN_NAME}"; done
 
 # Copy the configuration file.
-COPY ./settings.json /opt/etherpad-lite/
+COPY ./docker/settings.json /opt/etherpad-lite/settings.json
 
 # Follow the principle of least privilege: run as unprivileged user.
 #

doc/docker.md

@@ -35,26 +35,11 @@ Some plugins will need personalized settings in the `settings.json` file. Just r
 
 ### Examples
 
-Build the latest development version:
+Build a Docker image from the currently checked-out code:
 ```bash
 docker build --tag <YOUR_USERNAME>/etherpad .
 ```
 
-Build the latest stable version:
-```bash
-docker build --build-arg ETHERPAD_VERSION=master --build-arg NODE_ENV=production --tag <YOUR_USERNAME>/etherpad .
-```
-
-Build a specific tagged version:
-```bash
-docker build --build-arg ETHERPAD_VERSION=1.7.5 --build-arg NODE_ENV=production --tag <YOUR_USERNAME>/etherpad .
-```
-
-Build a specific git hash:
-```bash
-docker build --build-arg ETHERPAD_VERSION=4c45ac3cb1ae --tag <YOUR_USERNAME>/etherpad .
-```
-
 Include two plugins in the container:
 ```bash
 docker build --build-arg ETHERPAD_PLUGINS="ep_codepad ep_author_neat" --tag <YOUR_USERNAME>/etherpad .