chore: fix depot build (#6057)

scripts/Dockerfile

@@ -0,0 +1,24 @@
+# This is the multi-arch Dockerfile used for Coder. Since it's multi-arch and
+# cross-compiled, it cannot have ANY "RUN" commands. All binaries are built
+# using the go toolchain on the host and then copied into the build context by
+# scripts/build_docker.sh.
+#
+# If you need RUN commands (e.g. to install tools via apk), add them to
+# Dockerfile.base instead, which supports "RUN" commands.
+ARG BASE_IMAGE
+FROM $BASE_IMAGE
+
+# LABEL doesn't add any real layers so it's fine (and easier) to do it here than
+# in the build script.
+ARG CODER_VERSION
+LABEL \
+	org.opencontainers.image.title="Coder" \
+	org.opencontainers.image.description="A tool for provisioning self-hosted development environments with Terraform." \
+	org.opencontainers.image.url="https://github.com/coder/coder" \
+	org.opencontainers.image.source="https://github.com/coder/coder" \
+	org.opencontainers.image.version="$CODER_VERSION"
+
+# The coder binary is injected by scripts/build_docker.sh.
+COPY --chown=1000:1000 --chmod=755 coder /opt/coder
+
+ENTRYPOINT [ "/opt/coder", "server" ]

scripts/Dockerfile.base

@@ -0,0 +1,27 @@
+# This is the base image used for Coder images. It's a multi-arch image that is
+# built in depot.dev for all supported architectures. Since it's built on real
+# hardware and not cross-compiled, it can have "RUN" commands.
+FROM alpine:latest
+
+# We use a single RUN command to reduce the number of layers in the image.
+RUN apk add --no-cache \
+		curl \
+		wget \
+		bash \
+		git \
+		openssh-client && \
+	addgroup \
+		-g 1000 \
+		coder && \
+	adduser \
+		-D \
+		-s /bin/bash \
+		-h /home/coder \
+		-u 1000 \
+		-G coder \
+		coder
+
+USER 1000:1000
+ENV HOME=/home/coder
+ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt
+WORKDIR /home/coder

scripts/build_docker.sh

@@ -112,8 +112,8 @@ fi
 cdroot
 temp_dir="$(TMPDIR="$(dirname "$input_file")" mktemp -d)"
 ln "$input_file" "$temp_dir/coder"
-ln Dockerfile.base "$temp_dir/"
-ln Dockerfile "$temp_dir/"
+ln ./scripts/Dockerfile.base "$temp_dir/"
+ln ./scripts/Dockerfile "$temp_dir/"
 
 cd "$temp_dir"