diff --git a/packages/content-fetch/Dockerfile b/packages/content-fetch/Dockerfile
index fd025629c..1201c497d 100644
--- a/packages/content-fetch/Dockerfile
+++ b/packages/content-fetch/Dockerfile
@@ -29,11 +29,19 @@ COPY tsconfig.json .
 COPY .prettierrc .
 COPY .eslintrc .
 
-COPY /packages/content-fetch ./packages/content-fetch
-COPY /packages/content-handler ./packages/content-handler
+COPY /packages/content-handler/package.json ./packages/content-handler/package.json
 
 RUN yarn install --pure-lockfile
 
+ADD /packages/content-fetch ./packages/content-fetch
+ADD /packages/content-handler ./packages/content-handler
+RUN yarn workspace @omnivore/content-handler build
+
+# After building, fetch the production dependencies
+RUN rm -rf /app/packages/content-fetch/node_modules
+RUN rm -rf /app/node_modules
+RUN yarn install --pure-lockfile --production
+
 EXPOSE 8080
 
 CMD ["yarn", "workspace", "@omnivore/content-fetch", "start"]
diff --git a/packages/content-fetch/Dockerfile-local b/packages/content-fetch/Dockerfile-local
index 505e4c2da..694ef1a08 100644
--- a/packages/content-fetch/Dockerfile-local
+++ b/packages/content-fetch/Dockerfile-local
@@ -33,11 +33,19 @@ COPY tsconfig.json .
 COPY .prettierrc .
 COPY .eslintrc .
 
-COPY /packages/content-fetch ./packages/content-fetch
-COPY /packages/content-handler ./packages/content-handler
+COPY /packages/content-handler/package.json ./packages/content-handler/package.json
 
 RUN yarn install --pure-lockfile
 
+ADD /packages/content-fetch ./packages/content-fetch
+ADD /packages/content-handler ./packages/content-handler
+RUN yarn workspace @omnivore/content-handler build
+
+# After building, fetch the production dependencies
+RUN rm -rf /app/packages/content-fetch/node_modules
+RUN rm -rf /app/node_modules
+RUN yarn install --pure-lockfile --production
+
 EXPOSE 8080
 
 CMD ["yarn", "workspace", "@omnivore/content-fetch", "start"]
diff --git a/packages/content-handler/package.json b/packages/content-handler/package.json
index e4021b3e4..dc4edb4b1 100644
--- a/packages/content-handler/package.json
+++ b/packages/content-handler/package.json
@@ -15,6 +15,11 @@
     "build": "tsc"
   },
   "devDependencies": {
+    "@types/addressparser": "^1.0.1",
+    "@types/luxon": "^3.0.1",
+    "@types/rfc2047": "^2.0.1",
+    "@types/underscore": "^1.11.4",
+    "@types/uuid": "^8.3.4",
     "chai": "^4.3.6",
     "chai-as-promised": "^7.1.1",
     "chai-string": "^1.5.0",
diff --git a/packages/content-handler/test/newsletter.test.ts b/packages/content-handler/test/newsletter.test.ts
index dd3b7941c..b8748b832 100644
--- a/packages/content-handler/test/newsletter.test.ts
+++ b/packages/content-handler/test/newsletter.test.ts
@@ -172,7 +172,7 @@ describe('Newsletter email test', () => {
       expect(url).to.startWith(
         'https://www.milkroad.com/p/talked-guy-spent-30m-beeple'
       )
-    })
+    }).timeout(10000)
     it('returns undefined if it is not a newsletter', async () => {
       const html = load('./test/data/substack-forwarded-welcome-email.html')
       const url = await new SubstackHandler().findNewsletterUrl(html)
diff --git a/yarn.lock b/yarn.lock
index 1edbd4c7a..25ddf6de0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7896,6 +7896,11 @@
   resolved "https://registry.yarnpkg.com/@types/luxon/-/luxon-1.27.1.tgz#aceeb2d5be8fccf541237e184e37ecff5faa9096"
   integrity sha512-cPiXpOvPFDr2edMnOXlz3UBDApwUfR+cpizvxCy0n3vp9bz/qe8BWzHPIEFcy+ogUOyjKuCISgyq77ELZPmkkg==
 
+"@types/luxon@^3.0.1":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/luxon/-/luxon-3.0.1.tgz#2b1657096473e24b049bdedf3710f99645f3a17f"
+  integrity sha512-/LAvk1cMOJt0ghzMFrZEvByUhsiEfeeT2IF53Le+Ki3A538yEL9pRZ7a6MuCxdrYK+YNqNIDmrKU/r2nnw04zQ==
+
 "@types/mdast@^3.0.0":
   version "3.0.10"
   resolved "https://registry.yarnpkg.com/@types/mdast/-/mdast-3.0.10.tgz#4724244a82a4598884cbbe9bcfd73dff927ee8af"
@@ -8260,7 +8265,7 @@
   dependencies:
     "@types/node" "*"
 
-"@types/uuid@^8.3.0", "@types/uuid@^8.3.1":
+"@types/uuid@^8.3.0", "@types/uuid@^8.3.1", "@types/uuid@^8.3.4":
   version "8.3.4"
   resolved "https://registry.yarnpkg.com/@types/uuid/-/uuid-8.3.4.tgz#bd86a43617df0594787d38b735f55c805becf1bc"
   integrity sha512-c/I8ZRb51j+pYGAu5CrFMRxqZ2ke4y2grEBO5AUjgSkSk+qT2Ea+OdWElz/OiMf5MNpn2b17kuVBwZLQJXzihw==