Update dev workflow (#32)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

Dockerfile.dev

@@ -0,0 +1,51 @@
+#syntax=docker/dockerfile:1.2
+
+FROM node:12 AS deps
+WORKDIR /src
+COPY package.json yarn.lock ./
+RUN --mount=type=cache,target=/src/node_modules \
+  yarn install
+
+FROM scratch AS update-yarn
+COPY --from=deps /src/yarn.lock /
+
+FROM deps AS validate-yarn
+COPY .git .git
+RUN status=$(git status --porcelain -- yarn.lock); if [ -n "$status" ]; then echo $status; exit 1; fi
+
+FROM deps AS base
+COPY . .
+
+FROM base AS build
+RUN --mount=type=cache,target=/src/node_modules \
+  yarn build
+
+FROM deps AS test
+ENV RUNNER_TEMP=/tmp/github_runner
+ENV RUNNER_TOOL_CACHE=/tmp/github_tool_cache
+COPY . .
+RUN --mount=type=cache,target=/src/node_modules \
+  yarn run test
+
+FROM scratch AS test-coverage
+COPY --from=test /src/coverage /coverage/
+
+FROM base AS run-format
+RUN --mount=type=cache,target=/src/node_modules \
+  yarn run format
+
+FROM scratch AS format
+COPY --from=run-format /src/src/*.ts /src/
+
+FROM base AS validate-format
+RUN --mount=type=cache,target=/src/node_modules \
+  yarn run format-check
+
+FROM scratch AS dist
+COPY --from=build /src/dist/ /dist/
+
+FROM build AS validate-build
+RUN status=$(git status --porcelain -- dist); if [ -n "$status" ]; then echo $status; exit 1; fi
+
+FROM base AS dev
+ENTRYPOINT ["bash"]