Merge pull request #233 from turt2live/travis/docker

Update Docker instructions to be more automated-build friendly

.dockerignore

@@ -0,0 +1,6 @@
+vendor/pkg
+vendor/src
+pkg
+hooks
+bin
+.git

.gitignore

@@ -12,6 +12,9 @@ bin
 pkg
 _obj
 _test
+.idea
+vendor/pkg
+vendor/src
 
 # Architecture specific extensions/prefixes
 *.[568vq]

Dockerfile

@@ -1,10 +1,32 @@
-FROM alpine:3.6
+# Build go-neb
+FROM golang:1.10-alpine as builder
 
-ENV BIND_ADDRESS=:4050 DATABASE_TYPE=sqlite3 DATABASE_URL=/data/go-neb.db?_busy_timeout=5000
+COPY . /tmp/go-neb
+WORKDIR /tmp/go-neb
+RUN apk add --no-cache -t build-deps git gcc musl-dev go \
+    && go get -u github.com/constabulary/gb/... \
+    && gb vendor restore \
+    && gb build -f github.com/matrix-org/go-neb
 
-COPY bin/go-neb /go-neb
+
+# Run go-neb
+FROM alpine:3.7
+
+ENV BIND_ADDRESS=:4050 \
+    DATABASE_TYPE=sqlite3 \
+    DATABASE_URL=/data/go-neb.db?_busy_timeout=5000 \
+    UID=1337 \
+    GID=1337
+
+COPY --from=builder /tmp/go-neb/bin/go-neb /usr/local/bin/go-neb
+RUN apk add --no-cache \
+      ca-certificates \
+      su-exec \
+      s6
 
 VOLUME /data
 EXPOSE 4050
 
-ENTRYPOINT ["/go-neb"]
+COPY docker/root /
+
+ENTRYPOINT ["/bin/s6-svscan", "/etc/s6.d/"]

README.md

@@ -225,7 +225,12 @@ sensible-browser http://localhost:6060/pkg/github.com/matrix-org/go-neb
 
 ## Docker image
 
-There is a `Dockerfile` in the root of the repository and a `build-docker-image.sh` script that uses an alpine-based golang container to build `go-neb` (note that this will overwrite host-built binaries in `pkg/` and `bin/`) and then builds the docker image using that binary.
+To get started quickly, use the image from docker.io:
+```
+docker run -v /path/to/data:/data -e "BASE_URL=http://your.public.url:4050" matrixdotorg/go-neb
+```
+
+If you'd prefer to build the file yourself, clone this repository and build the `Dockerfile`.
 
 The image sets the following environment variables:
 ```

build-docker-image.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-
-docker run \
-    --rm \
-    -v "$PWD":/usr/src/myapp \
-    -w /usr/src/myapp \
-    golang:1.8-alpine \
-    sh -c 'apk add --no-cache git gcc musl-dev && go get -u github.com/constabulary/gb/... && gb build -f github.com/matrix-org/go-neb'
-
-docker build -t ${IMAGE_PREFIX}go-neb:latest .

docker/root/etc/s6.d/.s6-svscan/finish

@@ -0,0 +1 @@
+#!/bin/sh

docker/root/etc/s6.d/go-neb/finish

@@ -0,0 +1,2 @@
+#!/bin/sh
+s6-svscanctl -t /etc/s6.d

docker/root/etc/s6.d/go-neb/run

@@ -0,0 +1,3 @@
+#!/bin/sh
+chown -R ${UID}:${GID} /data
+exec su-exec ${UID}:${GID} /usr/local/bin/go-neb