Add CI-Pipeline for docker (#1)

Reviewed-on: #1

.woodpecker.yml

@@ -0,0 +1,16 @@
+pipeline:
+  build:
+    secrets: [user, pass, HOMETOWN_VERSION]
+    image: docker.io/docker:23-cli
+    commands:
+      - apk add curl git
+      - docker login -u $USER -p $PASS dev.cat-enby.club
+      - HOMETOWN_VERSION=$(curl -sX GET "https://api.github.com/repos/hometown-fork/hometown/releases/latest" | awk '/tag_name/{print $4;exit}' FS='[""]')
+      - HOMETOWN_VERSION=$${HOMETOWN_VERSION//+}
+      - docker buildx build --build-arg HOMETOWN_VERSION=$HOMETOWN_VERSION -t dev.cat.enby.club/nikurasu/hometown:latest -t dev.cat-enby.club/nikurasu/hometown:$${HOMETOWN_VERSION//+} -f ./Dockerfile .
+      - docker push dev.cat-enby.club/nikurasu/hometown:$HOMETOWN_VERSION
+      - docker push dev.cat-enby.club/nikurasu/hometown:latest
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    when:
+      branch: main