diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..46a0e20
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,6 @@
+*
+!app.py
+!bots/
+!bots/**
+!Dockerfile
+!requirements.txt
diff --git a/Dockerfile b/Dockerfile
index 9cefaf1..de2840a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,26 @@
-# syntax=docker/dockerfile:1
+# syntax=docker/dockerfile:1.7
 
 FROM python:3.10-alpine
 
+ENV PIP_DEFAULT_TIMEOUT=120 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1
+
 WORKDIR /app
-COPY ./bots ./bots
-COPY ./app.py ./
-COPY requirements.txt ./
 
 RUN set -ex \
-    && apk add --no-cache git \
-    && python3 -m pip install --upgrade pip \
-    && pip install -r requirements.txt
+    && apk add --no-cache git
+
+COPY requirements.txt ./
+
+RUN --mount=type=cache,target=/root/.cache/pip \
+    set -ex; \
+    for attempt in 1 2 3; do \
+        python3 -m pip install --retries 10 -r requirements.txt && exit 0; \
+        if [ "${attempt}" -eq 3 ]; then exit 1; fi; \
+        echo "pip install failed; retrying (${attempt}/3)"; \
+    done
+
+COPY ./bots ./bots
+COPY ./app.py ./
 
 ENTRYPOINT [ "python", "app.py" ]