add publish workflow

Author: pinkiebell

.github/workflows/publish.yml

@@ -0,0 +1,19 @@
+name: Publish
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    timeout-minutes: 45
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: build & publish
+      run: scripts/workflow-publish.sh
+      env:
+        WEB_PATH: build/
+        IPFS_API: ${{ secrets.IPFS_API }}
+        FLY_ACCESS_TOKEN: ${{ secrets.FLY_ACCESS_TOKEN }}
+        DOMAIN: ${{ secrets.DOMAIN }}

scripts/publish.sh

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+#/bin/sh
+
+set -xe
+
+path=$WEB_PATH
+if [ -z $path ]; then
+  echo 'path missing'
+  exit 1
+fi
+
+# init ipfs and calculate CID
+ipfs init
+EXPECTED_CID=$(ipfs --offline add --recursive --hash sha2-256 --cid-version 1 --chunker=size-262144 --only-hash -Q $path | tail -n 1)
+
+if [ -z $EXPECTED_CID ]; then
+  exit 1
+fi
+
+# can't use ipfs because the connection with the ipfs cli to infura doesn't work
+FILES=$(find $path -type f -not -iname ".*")
+args=''
+set +x
+for file in $FILES; do
+  filename=${file#"$path"}
+  args="$args -F file=@$file;filename=_/$filename"
+done
+set -x
+NEW_CID=$(curl $args $IPFS_API'/api/v0/add?pin=true&cid-version=1&hash=sha2-256&chunker=size-262144' | tail -n 1 | cut -d '"' -f 8)
+
+if [ "$NEW_CID" != "$EXPECTED_CID" ]; then
+  exit 1
+fi
+
+# update dns
+APEX=`echo ${DOMAIN} | awk -F'.' '{print $(NF-1)"."$(NF)}'`
+/flyctl dns-records export $APEX > .tmp_zone
+OLD_CID=`dig +short TXT _dnslink.${DOMAIN} | sed -e 's/dnslink=\/ipfs\///g' -e 's/"//g'`
+cat .tmp_zone
+sed -i'' -e "s/$OLD_CID/$NEW_CID/g" .tmp_zone
+cat .tmp_zone
+/flyctl dns-records import $APEX .tmp_zone

scripts/workflow-publish.sh

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+#!/bin/sh
+
+set -xe
+
+cat | docker build -f - -t tmp `mktemp -d` << 'EOF'
+FROM flyio/flyctl:v0.0.233 as flyio
+FROM node:lts-alpine
+COPY --from=flyio /flyctl /
+RUN apk add curl bind-tools go-ipfs
+EOF
+
+docker run --rm -w /app -v $(pwd):/app tmp sh -c 'env && yarn && yarn build'
+docker run --rm -w /app -v $(pwd):/app -e IPFS_API=$IPFS_API -e WEB_PATH=$WEB_PATH -e FLY_ACCESS_TOKEN=$FLY_ACCESS_TOKEN -e DOMAIN=$DOMAIN tmp sh scripts/publish.sh