Update installation instructions

README.md

@@ -34,7 +34,13 @@ Mailpit is inspired by [MailHog](#why-rewrite-mailhog), but much, much faster.
 
 ## Installation
 
-Download a pre-built binary in the [releases](https://github.com/axllent/mailpit/releases/latest). The `mailpit` can be placed in your `$PATH`, or simply run as `./mailpit`. See `mailpit -h` for options, or see [the wiki](https://github.com/axllent/mailpit/wiki/Runtime-options) for additional information.
+Linux & Mac users can install it directly to `/usr/local/bin/mailpit` with:
+
+```bash
+sudo bash < <(curl -sL https://raw.githubusercontent.com/axllent/mailpit/develop/install.sh)
+```
+
+Or download a pre-built binary in the [releases](https://github.com/axllent/mailpit/releases/latest). The `mailpit` can be placed in your `$PATH`, or simply run as `./mailpit`. See `mailpit -h` for options, or see [the wiki](https://github.com/axllent/mailpit/wiki/Runtime-options) for additional information.
 
 To build Mailpit from source see [building from source](https://github.com/axllent/mailpit/wiki/Building-from-source).
 

install.sh

@@ -0,0 +1,98 @@
+#!/usr/bin/env bash
+
+GH_REPO="axllent/mailpit"
+TIMEOUT=90
+
+set -e
+
+VERSION=$(curl --silent --location --max-time "${TIMEOUT}" "https://api.github.com/repos/${GH_REPO}/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+if [ $? -ne 0 ]; then
+    echo -ne "\nThere was an error trying to check what is the latest version of ssbak.\nPlease try again later.\n"
+    exit 1
+fi
+
+# detect the platform
+OS="$(uname)"
+case $OS in
+Linux)
+    OS='linux'
+    ;;
+FreeBSD)
+    OS='freebsd'
+    echo 'OS not supported'
+    exit 2
+    ;;
+NetBSD)
+    OS='netbsd'
+    echo 'OS not supported'
+    exit 2
+    ;;
+OpenBSD)
+    OS='openbsd'
+    echo 'OS not supported'
+    exit 2
+    ;;
+Darwin)
+    OS='darwin'
+    ;;
+SunOS)
+    OS='solaris'
+    echo 'OS not supported'
+    exit 2
+    ;;
+*)
+    echo 'OS not supported'
+    exit 2
+    ;;
+esac
+
+# detect the arch
+OS_type="$(uname -m)"
+case "$OS_type" in
+x86_64 | amd64)
+    OS_type='amd64'
+    ;;
+i?86 | x86)
+    OS_type='386'
+    ;;
+aarch64 | arm64)
+    OS_type='arm64'
+    ;;
+*)
+    echo 'OS type not supported'
+    exit 2
+    ;;
+esac
+
+GH_REPO_BIN="mailpit-${OS}-${OS_type}.tar.gz"
+
+#create tmp directory and move to it with macOS compatibility fallback
+tmp_dir=$(mktemp -d 2>/dev/null || mktemp -d -t 'mailpit-install.XXXXXXXXXX')
+cd "$tmp_dir"
+
+echo "Downloading Mailpit $VERSION"
+LINK="https://github.com/${GH_REPO}/releases/download/${VERSION}/${GH_REPO_BIN}"
+
+curl --silent --location --max-time "${TIMEOUT}" "${LINK}" | tar zxf - || {
+    echo "Error downloading"
+    exit 2
+}
+
+mkdir -p /usr/local/bin || exit 2
+cp mailpit /usr/local/bin/ || exit 2
+chmod 755 /usr/local/bin/mailpit || exit 2
+case "$OS" in
+'linux')
+    chown root:root /usr/local/bin/mailpit || exit 2
+    ;;
+'freebsd' | 'openbsd' | 'netbsd' | 'darwin')
+    chown root:wheel /usr/local/bin/mailpit || exit 2
+    ;;
+*)
+    echo 'OS not supported'
+    exit 2
+    ;;
+esac
+
+rm -rf "$tmp_dir"
+echo "Installed successfully to /usr/local/bin/mailpit"