chore: move frontend files

frontend/Dockerfile

@@ -0,0 +1,73 @@
+# syntax=docker/dockerfile:1
+#  ┬─┐┬ ┐o┬  ┬─┐
+#  │─││ │││  │ │
+#  ┘─┘┘─┘┘┘─┘┘─┘
+
+FROM --platform=$BUILDPLATFORM node:20.11.0-alpine AS builder
+
+WORKDIR /build
+
+ARG USE_RELEASE=false
+ARG RELEASE_VERSION=unstable
+ENV PNPM_CACHE_FOLDER .cache/pnpm/
+ENV PUPPETEER_SKIP_DOWNLOAD true
+
+COPY package.json ./
+COPY pnpm-lock.yaml ./
+COPY patches ./patches/
+
+RUN if [ "$USE_RELEASE" != true ]; then \
+      # https://pnpm.io/installation#using-corepack
+      corepack enable && \
+      pnpm install; \
+    fi
+
+COPY . ./
+
+RUN if [ "$USE_RELEASE" != true ]; then \
+      apk add --no-cache --virtual .build-deps git jq && \
+      git describe --tags --always --abbrev=10 | sed 's/-/+/; s/^v//; s/-g/-/' | \
+      xargs -0 -I{} jq -Mcnr --arg version {} '{VERSION:$version}' | \
+      tee src/version.json && \
+      apk del .build-deps; \
+    fi
+
+RUN if [ "$USE_RELEASE" = true ]; then \
+      wget "https://dl.vikunja.io/frontend/vikunja-frontend-${RELEASE_VERSION}.zip" -O frontend-release.zip && \
+      unzip frontend-release.zip -d dist/; \
+    else \
+      # we don't use corepack prepare here by intend since
+      # we have renovate to keep our dependencies up to date
+      # Build the frontend
+      pnpm run build; \
+  fi
+
+#  ┌┐┐┌─┐o┌┐┐┐ │
+#  ││││ ┬││││┌┼┘
+#  ┘└┘┘─┘┘┘└┘┘ └
+
+FROM nginx:stable-alpine AS runner
+WORKDIR /usr/share/nginx/html
+LABEL maintainer="maintainers@vikunja.io"
+
+ENV VIKUNJA_HTTP_PORT 80
+ENV VIKUNJA_HTTP2_PORT 81
+ENV VIKUNJA_LOG_FORMAT main
+ENV VIKUNJA_API_URL /api/v1
+ENV VIKUNJA_SENTRY_ENABLED false
+ENV VIKUNJA_SENTRY_DSN https://85694a2d757547cbbc90cd4b55c5a18d@o1047380.ingest.sentry.io/6024480
+ENV VIKUNJA_PROJECT_INFINITE_NESTING_ENABLED false
+ENV VIKUNJA_ALLOW_ICON_CHANGES true
+ENV VIKUNJA_CUSTOM_LOGO_URL "''"
+
+COPY docker/injector.sh /docker-entrypoint.d/50-injector.sh
+COPY docker/ipv6-disable.sh /docker-entrypoint.d/60-ipv6-disable.sh
+COPY docker/nginx.conf /etc/nginx/nginx.conf
+COPY docker/templates/. /etc/nginx/templates/
+# copy compiled files from stage 1
+COPY --from=builder /build/dist ./
+# manage permissions
+RUN chmod 0755 /docker-entrypoint.d/*.sh /etc/nginx/templates && \
+    chmod -R 0644 /etc/nginx/nginx.conf && \
+    chown -R nginx:nginx ./ /etc/nginx/conf.d /etc/nginx/templates && \
+    rm -f /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh