Add docker and podman client wrapper scripts

Install the extra client wrappers

But don't set up any alias for "docker" or "podman", by default.
They would conflict with the regular client (binary) programs.

Use environment variables

This means it will work with multiple instances if needed.
Instead of hardcoding just one context/connection, "lima".

Exit if instance does not exist

Signed-off-by: Anders F Björklund <[email protected]>

Makefile

@@ -21,6 +21,8 @@ binaries: clean \
 	_output/bin/lima \
 	_output/bin/limactl \
 	_output/bin/nerdctl.lima \
+	_output/bin/docker.lima \
+	_output/bin/podman.lima \
 	_output/share/lima/lima-guestagent.Linux-x86_64 \
 	_output/share/lima/lima-guestagent.Linux-aarch64 \
 	_output/share/lima/lima-guestagent.Linux-riscv64
@@ -40,6 +42,14 @@ _output/bin/nerdctl.lima:
 	mkdir -p _output/bin
 	cp -a ./cmd/nerdctl.lima $@
 
+_output/bin/docker.lima: ./cmd/docker.lima
+	@mkdir -p _output/bin
+	cp -a $^ $@
+
+_output/bin/podman.lima: ./cmd/podman.lima
+	@mkdir -p _output/bin
+	cp -a $^ $@
+
 .PHONY: _output/bin/limactl
 _output/bin/limactl:
 	# The hostagent must be compiled with CGO_ENABLED=1 so that net.LookupIP() in the DNS server

cmd/docker.lima

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -eu
+: "${LIMA_INSTANCE:=docker}"
+: "${DOCKER:=docker}"
+
+if [ "$(limactl ls -q "$LIMA_INSTANCE" 2>/dev/null)" != "$LIMA_INSTANCE" ]; then
+  echo "instance \"$LIMA_INSTANCE\" does not exist, run \`limactl start --name=$LIMA_INSTANCE template://docker\` to create a new instance" >&2
+  exit 1
+fi
+DOCKER=$(command -v "$DOCKER" || true)
+if [ -n "$DOCKER" ]; then
+  DOCKER_HOST=$(limactl list "$LIMA_INSTANCE" --format 'unix://{{.Dir}}/sock/docker.sock')
+  export DOCKER_HOST
+  exec "$DOCKER" "$@"
+else
+  export LIMA_INSTANCE
+  exec lima docker "$@"
+fi

cmd/podman.lima

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -eu
+: "${LIMA_INSTANCE:=podman}"
+: "${PODMAN:=podman}"
+
+if [ "$(limactl ls -q "$LIMA_INSTANCE" 2>/dev/null)" != "$LIMA_INSTANCE" ]; then
+  echo "instance \"$LIMA_INSTANCE\" does not exist, run \`limactl start --name=$LIMA_INSTANCE template://podman\` to create a new instance" >&2
+  exit 1
+fi
+PODMAN=$(command -v "$PODMAN" || true)
+if [ -n "$PODMAN" ]; then
+  CONTAINER_HOST=$(limactl list "$LIMA_INSTANCE" --format 'unix://{{.Dir}}/sock/podman.sock')
+  export CONTAINER_HOST
+  exec "$PODMAN" --remote "$@"
+else
+  export LIMA_INSTANCE
+  exec lima podman "$@"
+fi