fix: make API dockerfile use correct setup steps

api/Dockerfile

@@ -1,12 +1,28 @@
 FROM node:lts-alpine
+
 # needed for native packages (bcrypt, canvas)
-RUN apk add --no-cache make gcc g++ python cairo-dev jpeg-dev pango-dev giflib-dev
-WORKDIR /usr/src/fosscord-server
-COPY package.json .
-COPY package-lock.json .
-RUN npm rebuild bcrypt --build-from-source && npm install canvas --build-from-source
+RUN apk add --no-cache \
+    make \
+    gcc \
+    g++ \
+    python \
+    cairo-dev \
+    jpeg-dev \
+    pango-dev \
+    giflib-dev
+
+WORKDIR /usr/src/fosscord-api
+
+RUN npm rebuild bcrypt --build-from-source \
+    && npm install canvas --build-from-source
+
+COPY api/package.json api/package-lock.json ./
+COPY util ../util
 RUN npm install
-COPY . .
+
+COPY api/ .
+
+RUN npm run build
+
 EXPOSE 3001
-RUN npm run build-docker
 CMD ["node", "dist/start.js"]